Constants (Apache Hadoop Amazon Web Services support 3.3.4 API)

java.lang.Object
- org.apache.hadoop.fs.s3a.Constants

```
@InterfaceAudience.Public
 @InterfaceStability.Evolving
public final class Constants
extends Object
```
All the constants used with the S3AFileSystem. Some of the strings are marked as Unstable. This means that they may be unsupported in future; at which point they will be marked as deprecated and simply ignored.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`ACCESS_KEY`
`static String`	`ASSUMED_ROLE_ARN` ARN of AWS Role to request: "fs.s3a.assumed.role.arn".
`static String`	`ASSUMED_ROLE_CREDENTIALS_DEFAULT`
`static String`	`ASSUMED_ROLE_CREDENTIALS_PROVIDER` List of providers to authenticate for the assumed role: "fs.s3a.assumed.role.credentials.provider".
`static String`	`ASSUMED_ROLE_POLICY` JSON policy containing the policy to apply to the role: "fs.s3a.assumed.role.policy".
`static String`	`ASSUMED_ROLE_SESSION_DURATION` Duration of assumed roles before a refresh is attempted.
`static String`	`ASSUMED_ROLE_SESSION_DURATION_DEFAULT` Default duration of an assumed role: "1h".
`static String`	`ASSUMED_ROLE_SESSION_NAME` Session name for the assumed role, must be valid characters according to the AWS APIs: "fs.s3a.assumed.role.session.name".
`static String`	`ASSUMED_ROLE_STS_ENDPOINT` Security Token Service Endpoint: "fs.s3a.assumed.role.sts.endpoint".
`static String`	`ASSUMED_ROLE_STS_ENDPOINT_REGION` Region for the STS endpoint; needed if the endpoint is set to anything other then the central one.: "fs.s3a.assumed.role.sts.endpoint.region".
`static String`	`ASSUMED_ROLE_STS_ENDPOINT_REGION_DEFAULT` Default value for the STS endpoint region; needed for v4 signing: "".
`static String`	`AUTHORITATIVE_PATH` Whether or not to allow MetadataStore to be source of truth for a path prefix
`static String`	`AWS_CREDENTIALS_PROVIDER`
`static String`	`AWS_REGION` AWS S3 region for the bucket.
`static String`	`AWS_S3_ACCESSPOINT_REQUIRED` Require that all S3 access is made through Access Points.
`static String`	`AWS_S3_CENTRAL_REGION` The special S3 region which can be used to talk to any bucket.
`static String`	`AWS_SERVICE_IDENTIFIER_DDB`
`static String`	`AWS_SERVICE_IDENTIFIER_S3`
`static String`	`AWS_SERVICE_IDENTIFIER_STS`
`static String`	`BUFFER_DIR`
`static String`	`BULK_DELETE_PAGE_SIZE` Number of objects to delete in a single multi-object delete "fs.s3a.bulk.delete.page.size".
`static int`	`BULK_DELETE_PAGE_SIZE_DEFAULT` Default Number of objects to delete in a single multi-object delete: 250.
`static String`	`CANNED_ACL`
`static String`	`CENTRAL_ENDPOINT` The central endpoint :"s3.amazonaws.com".
`static String`	`CHANGE_DETECT_MODE` Mode to run change detection in.
`static String`	`CHANGE_DETECT_MODE_CLIENT` Change is detected on the client side by comparing the returned id with the expected id.
`static String`	`CHANGE_DETECT_MODE_DEFAULT` Default change detection mode: server.
`static String`	`CHANGE_DETECT_MODE_NONE` Change detection is turned off.
`static String`	`CHANGE_DETECT_MODE_SERVER` Change is detected by passing the expected value in the GetObject request.
`static String`	`CHANGE_DETECT_MODE_WARN` Change is detected on the client side by comparing the returned id with the expected id.
`static String`	`CHANGE_DETECT_REQUIRE_VERSION` If true, raises a `RemoteFileChangedException` exception when S3 doesn't provide the attribute defined by fs.s3a.change.detection.source.
`static boolean`	`CHANGE_DETECT_REQUIRE_VERSION_DEFAULT` Default change detection require version: true.
`static String`	`CHANGE_DETECT_SOURCE` Where to get the value to use in change detection.
`static String`	`CHANGE_DETECT_SOURCE_DEFAULT` Default change detection mechanism: eTag.
`static String`	`CHANGE_DETECT_SOURCE_ETAG` eTag as the change detection mechanism.
`static String`	`CHANGE_DETECT_SOURCE_VERSION_ID` Object versionId as the change detection mechanism.
`static String`	`CUSTOM_SIGNERS` List of custom Signers.
`static String`	`DEFAULT_ASSUMED_ROLE_STS_ENDPOINT` Default endpoint for session tokens: "".
`static String[]`	`DEFAULT_AUTHORITATIVE_PATH`
`static String`	`DEFAULT_CANNED_ACL`
`static String`	`DEFAULT_DIRECTORY_MARKER_POLICY` Default retention policy: "delete".
`static String`	`DEFAULT_ENDPOINT` Default value of s3 endpoint: "".
`static int`	`DEFAULT_ESTABLISH_TIMEOUT`
`static int`	`DEFAULT_EXECUTOR_CAPACITY` The capacity of executor queues for operations other than block upload, where `FAST_UPLOAD_ACTIVE_BLOCKS` is used instead.
`static int`	`DEFAULT_FAST_BUFFER_SIZE`
`static boolean`	`DEFAULT_FAST_UPLOAD` Deprecated.
`static int`	`DEFAULT_FAST_UPLOAD_ACTIVE_BLOCKS` Limit of queued block upload operations before writes block.
`static String`	`DEFAULT_FAST_UPLOAD_BUFFER` Default buffer option: "disk".
`static int`	`DEFAULT_KEEPALIVE_TIME`
`static int`	`DEFAULT_LIST_VERSION`
`static int`	`DEFAULT_MAX_ERROR_RETRIES` Default number of times the AWS client library should retry errors before escalating to the S3A code: 10.
`static int`	`DEFAULT_MAX_PAGING_KEYS`
`static int`	`DEFAULT_MAX_THREADS`
`static int`	`DEFAULT_MAX_TOTAL_TASKS`
`static int`	`DEFAULT_MAXIMUM_CONNECTIONS`
`static boolean`	`DEFAULT_METADATASTORE_AUTHORITATIVE`
`static long`	`DEFAULT_METADATASTORE_METADATA_TTL` Default TTL in milliseconds: 15 minutes.
`static long`	`DEFAULT_MIN_MULTIPART_THRESHOLD`
`static long`	`DEFAULT_MULTIPART_SIZE`
`static boolean`	`DEFAULT_PURGE_EXISTING_MULTIPART`
`static long`	`DEFAULT_PURGE_EXISTING_MULTIPART_AGE`
`static long`	`DEFAULT_READAHEAD_RANGE`
`static int`	`DEFAULT_REQUEST_TIMEOUT`
`static Class<? extends S3ClientFactory>`	`DEFAULT_S3_CLIENT_FACTORY_IMPL`
`static String`	`DEFAULT_S3GUARD_DISABLED_WARN_LEVEL`
`static int`	`DEFAULT_S3GUARD_METASTORE_LOCAL_ENTRY_TTL`
`static int`	`DEFAULT_S3GUARD_METASTORE_LOCAL_MAX_RECORDS`
`static boolean`	`DEFAULT_SECURE_CONNECTIONS`
`static int`	`DEFAULT_SOCKET_RECV_BUFFER`
`static int`	`DEFAULT_SOCKET_SEND_BUFFER`
`static int`	`DEFAULT_SOCKET_TIMEOUT`
`static org.apache.hadoop.security.ssl.DelegatingSSLSocketFactory.SSLChannelMode`	`DEFAULT_SSL_CHANNEL_MODE`
`static String`	`DIRECTORY_MARKER_POLICY` Policy for directory markers.
`static String`	`DIRECTORY_MARKER_POLICY_AUTHORITATIVE` Retain directory markers in authoritative directory trees only.
`static String`	`DIRECTORY_MARKER_POLICY_DELETE` Delete directory markers.
`static String`	`DIRECTORY_MARKER_POLICY_KEEP` Retain directory markers.
`static String`	`DOWNGRADE_SYNCABLE_EXCEPTIONS` Rather than raise an exception when an attempt is made to call the Syncable APIs, warn and downgrade.
`static boolean`	`DOWNGRADE_SYNCABLE_EXCEPTIONS_DEFAULT` Default value for syncable invocation.
`static String`	`ENABLE_MULTI_DELETE`
`static String`	`ENDPOINT` Endpoint.
`static String`	`ESTABLISH_TIMEOUT`
`static String`	`ETAG_CHECKSUM_ENABLED` Should etags be exposed as checksums?
`static boolean`	`ETAG_CHECKSUM_ENABLED_DEFAULT` Default value: false.
`static String`	`EXECUTOR_CAPACITY` The capacity of executor queues for operations other than block upload, where `FAST_UPLOAD_ACTIVE_BLOCKS` is used instead.
`static String`	`EXPERIMENTAL_AWS_INTERNAL_THROTTLING` Experimental/Unstable feature: should the AWS client library retry throttle responses before escalating to the S3A code: "fs.s3a.experimental.aws.s3.throttling".
`static boolean`	`EXPERIMENTAL_AWS_INTERNAL_THROTTLING_DEFAULT` Default value of `EXPERIMENTAL_AWS_INTERNAL_THROTTLING`, value: true.
`static String`	`FAIL_INJECT_CLIENT_FACTORY`
`static String`	`FAIL_INJECT_INCONSISTENCY_KEY` Inconsistency (visibility delay) injection settings.
`static String`	`FAIL_INJECT_INCONSISTENCY_MSEC`
`static String`	`FAIL_INJECT_INCONSISTENCY_PROBABILITY`
`static String`	`FAIL_INJECT_THROTTLE_PROBABILITY`
`static String`	`FAIL_ON_METADATA_WRITE_ERROR` Whether to fail when there is an error writing to the metadata store.
`static boolean`	`FAIL_ON_METADATA_WRITE_ERROR_DEFAULT` Default value (true) for FAIL_ON_METADATA_WRITE_ERROR.
`static String`	`FAST_BUFFER_SIZE` Deprecated.
`static String`	`FAST_UPLOAD` Deprecated.
`static String`	`FAST_UPLOAD_ACTIVE_BLOCKS` Maximum Number of blocks a single output stream can have active (uploading, or queued to the central FileSystem instance's pool of queued operations.
`static String`	`FAST_UPLOAD_BUFFER` What buffer to use.
`static String`	`FAST_UPLOAD_BUFFER_ARRAY` Use an in-memory array.
`static String`	`FAST_UPLOAD_BUFFER_DISK` Buffer blocks to disk: "disk".
`static String`	`FAST_UPLOAD_BYTEBUFFER` Use a byte buffer.
`static String`	`FS_S3A`
`static String`	`FS_S3A_BLOCK_SIZE`
`static String`	`FS_S3A_BUCKET_PREFIX` Prefix for S3A bucket-specific properties: "fs.s3a.bucket.".
`static String`	`FS_S3A_PREFIX` Prefix for all S3A properties: "fs.s3a.".
`static String`	`HADOOP_TMP_DIR` default hadoop temp dir on local system: "hadoop.tmp.dir".
`static String`	`INPUT_FADV_NORMAL` General input.
`static String`	`INPUT_FADV_RANDOM` Optimized purely for random seek+read/positionedRead operations; The performance of sequential IO may be reduced in exchange for more efficient `seek()` operations.
`static String`	`INPUT_FADV_SEQUENTIAL` Optimized for sequential access.
`static String`	`INPUT_FADVISE` Which input strategy to use for buffering, seeking and similar when reading data.
`static String`	`KEEPALIVE_TIME`
`static String`	`LIST_VERSION` S3 API level parameters.
`static String`	`MAX_ERROR_RETRIES` Number of times the AWS client library should retry errors before escalating to the S3A code: "fs.s3a.attempts.maximum".
`static int`	`MAX_MULTIPART_COUNT` Maximum number of partitions in a multipart upload: 10000.
`static String`	`MAX_PAGING_KEYS`
`static String`	`MAX_THREADS`
`static String`	`MAX_TOTAL_TASKS`
`static String`	`MAXIMUM_CONNECTIONS`
`static String`	`METADATASTORE_AUTHORITATIVE` Whether or not to allow MetadataStore to be source of truth.
`static String`	`METADATASTORE_METADATA_TTL` How long a directory listing in the MS is considered as authoritative.
`static String`	`MIN_MULTIPART_THRESHOLD`
`static int`	`MULTIPART_MIN_SIZE` The minimum multipart size which S3 supports.
`static String`	`MULTIPART_SIZE`
`static String`	`PATH_STYLE_ACCESS`
`static String`	`PROXY_DOMAIN`
`static String`	`PROXY_HOST`
`static String`	`PROXY_PASSWORD`
`static String`	`PROXY_PORT`
`static String`	`PROXY_USERNAME`
`static String`	`PROXY_WORKSTATION`
`static String`	`PURGE_EXISTING_MULTIPART`
`static String`	`PURGE_EXISTING_MULTIPART_AGE`
`static String`	`READAHEAD_RANGE` read ahead buffer size to prevent connection re-establishments.
`static String`	`REQUEST_TIMEOUT`
`static String`	`RETRY_INTERVAL` Interval between retry attempts.: "fs.s3a.retry.interval".
`static String`	`RETRY_INTERVAL_DEFAULT` Default retry interval: "500ms".
`static String`	`RETRY_LIMIT` Number of times to retry any repeatable S3 client request on failure, excluding throttling requests: "fs.s3a.retry.limit".
`static int`	`RETRY_LIMIT_DEFAULT` Default retry limit: 7.
`static String`	`RETRY_THROTTLE_INTERVAL` Interval between retry attempts on throttled requests: "fs.s3a.retry.throttle.interval".
`static String`	`RETRY_THROTTLE_INTERVAL_DEFAULT` Default throttled retry interval: "500ms".
`static String`	`RETRY_THROTTLE_LIMIT` Number of times to retry any throttled request: "fs.s3a.retry.throttle.limit".
`static int`	`RETRY_THROTTLE_LIMIT_DEFAULT` Default throttled retry limit: 20.
`static String`	`S3_CLIENT_FACTORY_IMPL`
`static String`	`S3_ENCRYPTION_ALGORITHM` Set S3-server side encryption(SSE) or S3-Client side encryption(CSE) algorithm.
`static String`	`S3_ENCRYPTION_KEY` Set S3-SSE or S3-CSE encryption Key if required.
`static String`	`S3_METADATA_STORE_IMPL`
`static String`	`S3A_BUCKET_PROBE` Bucket validation parameter which can be set by client.
`static int`	`S3A_BUCKET_PROBE_DEFAULT` Default value of bucket validation parameter.
`static int`	`S3A_DEFAULT_PORT` Default port for this is 443: HTTPS.
`static String`	`S3A_SECURITY_CREDENTIAL_PROVIDER_PATH` Extra set of security credentials which will be prepended to that set in `"hadoop.security.credential.provider.path"`.
`static String`	`S3GUARD_CLI_PRUNE_AGE` Minimum period of time (in milliseconds) to keep metadata (may only be applied when a prune command is manually run).
`static String`	`S3GUARD_CONSISTENCY_RETRY_INTERVAL` Initial retry interval: "fs.s3a.s3guard.consistency.retry.interval".
`static String`	`S3GUARD_CONSISTENCY_RETRY_INTERVAL_DEFAULT` Default initial retry interval: "2s".
`static String`	`S3GUARD_CONSISTENCY_RETRY_LIMIT` Number of times to retry any repeatable S3 client request on failure, excluding throttling requests: "fs.s3a.s3guard.consistency.retry.limit".
`static int`	`S3GUARD_CONSISTENCY_RETRY_LIMIT_DEFAULT` Default retry limit: 7.
`static int`	`S3GUARD_DDB_BACKGROUND_SLEEP_MSEC_DEFAULT`
`static String`	`S3GUARD_DDB_BACKGROUND_SLEEP_MSEC_KEY` Period of time (in milliseconds) to sleep between batches of writes.
`static int`	`S3GUARD_DDB_BATCH_WRITE_REQUEST_LIMIT` The maximum put or delete requests per BatchWriteItem request.
`static String`	`S3GUARD_DDB_MAX_RETRIES`
`static int`	`S3GUARD_DDB_MAX_RETRIES_DEFAULT` Max retries on batched/throttled DynamoDB operations before giving up and throwing an IOException.
`static String`	`S3GUARD_DDB_REGION_KEY` The region of the DynamoDB service.
`static long`	`S3GUARD_DDB_TABLE_CAPACITY_READ_DEFAULT` Default read capacity when creating a table.
`static String`	`S3GUARD_DDB_TABLE_CAPACITY_READ_KEY` Read capacity when creating a table.
`static long`	`S3GUARD_DDB_TABLE_CAPACITY_WRITE_DEFAULT` Default write capacity when creating a table.
`static String`	`S3GUARD_DDB_TABLE_CAPACITY_WRITE_KEY` Write capacity when creating a table.
`static String`	`S3GUARD_DDB_TABLE_CREATE_KEY` Whether to create the DynamoDB table if the table does not exist.
`static String`	`S3GUARD_DDB_TABLE_NAME_KEY` The DynamoDB table name to use.
`static String`	`S3GUARD_DDB_TABLE_SSE_CMK` The KMS Master Key (CMK) used for the KMS encryption on the table.
`static String`	`S3GUARD_DDB_TABLE_SSE_ENABLED` Whether server-side encryption (SSE) is enabled or disabled on the table.
`static String`	`S3GUARD_DDB_TABLE_TAG` A prefix for adding tags to the DDB Table upon creation.
`static String`	`S3GUARD_DDB_THROTTLE_RETRY_INTERVAL`
`static String`	`S3GUARD_DDB_THROTTLE_RETRY_INTERVAL_DEFAULT`
`static String`	`S3GUARD_DISABLED_WARN_LEVEL` The warn level if S3Guard is disabled.
`static String`	`S3GUARD_METASTORE_DYNAMO` Use DynamoDB for the metadata: "org.apache.hadoop.fs.s3a.s3guard.DynamoDBMetadataStore".
`static String`	`S3GUARD_METASTORE_LOCAL` Use Local memory for the metadata: "org.apache.hadoop.fs.s3a.s3guard.LocalMetadataStore".
`static String`	`S3GUARD_METASTORE_LOCAL_ENTRY_TTL` Time to live in milliseconds in LocalMetadataStore.
`static String`	`S3GUARD_METASTORE_LOCAL_MAX_RECORDS` Maximum number of records in LocalMetadataStore.
`static String`	`S3GUARD_METASTORE_NULL` The default "Null" metadata store: "org.apache.hadoop.fs.s3a.s3guard.NullMetadataStore".
`static String`	`S3N_FOLDER_SUFFIX`
`static String`	`SECRET_KEY`
`static String`	`SECURE_CONNECTIONS`
`static String`	`SERVER_SIDE_ENCRYPTION_AES256` Deprecated.
`static String`	`SERVER_SIDE_ENCRYPTION_ALGORITHM` Deprecated.
`static String`	`SERVER_SIDE_ENCRYPTION_KEY` Deprecated.
`static String`	`SESSION_TOKEN` session token for when using TemporaryAWSCredentialsProvider: : "fs.s3a.session.token".
`static String`	`SIGNING_ALGORITHM` There's 3 parameters that can be used to specify a non-default signing algorithm. fs.s3a.signing-algorithm - This property has existed for the longest time.
`static String`	`SIGNING_ALGORITHM_DDB`
`static String`	`SIGNING_ALGORITHM_S3`
`static String`	`SIGNING_ALGORITHM_STS`
`static String`	`SOCKET_RECV_BUFFER`
`static String`	`SOCKET_SEND_BUFFER`
`static String`	`SOCKET_TIMEOUT`
`static String`	`SSL_CHANNEL_MODE`
`static String`	`STORE_CAPABILITY_DIRECTORY_MARKER_ACTION_DELETE` `PathCapabilities` probe to indicate that a path deletes directory markers.
`static String`	`STORE_CAPABILITY_DIRECTORY_MARKER_ACTION_KEEP` `PathCapabilities` probe to indicate that a path keeps directory markers.
`static String`	`STORE_CAPABILITY_DIRECTORY_MARKER_AWARE` `PathCapabilities` probe to verify that an S3A Filesystem has the changes needed to safely work with buckets where directoy markers have not been deleted.
`static String`	`STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_AUTHORITATIVE` `PathCapabilities` probe to indicate that the filesystem keeps directory markers in authoritative paths only.
`static String`	`STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_DELETE` `PathCapabilities` probe to indicate that the filesystem deletes directory markers.
`static String`	`STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_KEEP` `PathCapabilities` probe to indicate that the filesystem keeps directory markers.
`static String`	`STREAM_READ_GAUGE_INPUT_POLICY` Gauge name for the input policy : "stream_read_gauge_input_policy".
`static int`	`THREAD_POOL_SHUTDOWN_DELAY_SECONDS` How long to wait for the thread pool to terminate when cleaning up.
`static String`	`USER_AGENT_PREFIX`
`static String`	`XA_HEADER_PREFIX` To comply with the XAttr rules, all headers of the object retrieved through the getXAttr APIs have the prefix: "header.".

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - HADOOP_TMP_DIR
```
public static final String HADOOP_TMP_DIR
```
    default hadoop temp dir on local system: "hadoop.tmp.dir".
    
    See Also:
    
    Constant Field Values
  - MULTIPART_MIN_SIZE
```
public static final int MULTIPART_MIN_SIZE
```
    The minimum multipart size which S3 supports.
    
    See Also:
    
    Constant Field Values
  - ACCESS_KEY
```
public static final String ACCESS_KEY
```
    See Also:
    
    Constant Field Values
  - SECRET_KEY
```
public static final String SECRET_KEY
```
    See Also:
    
    Constant Field Values
  - AWS_CREDENTIALS_PROVIDER
```
public static final String AWS_CREDENTIALS_PROVIDER
```
    See Also:
    
    Constant Field Values
  - S3A_SECURITY_CREDENTIAL_PROVIDER_PATH
```
public static final String S3A_SECURITY_CREDENTIAL_PROVIDER_PATH
```
    Extra set of security credentials which will be prepended to that set in "hadoop.security.credential.provider.path". This extra option allows for per-bucket overrides.
    
    See Also:
    
    Constant Field Values
  - SESSION_TOKEN
```
public static final String SESSION_TOKEN
```
    session token for when using TemporaryAWSCredentialsProvider: : "fs.s3a.session.token".
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_ARN
```
public static final String ASSUMED_ROLE_ARN
```
    ARN of AWS Role to request: "fs.s3a.assumed.role.arn".
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_SESSION_NAME
```
public static final String ASSUMED_ROLE_SESSION_NAME
```
    Session name for the assumed role, must be valid characters according to the AWS APIs: "fs.s3a.assumed.role.session.name". If not set, one is generated from the current Hadoop/Kerberos username.
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_SESSION_DURATION
```
public static final String ASSUMED_ROLE_SESSION_DURATION
```
    Duration of assumed roles before a refresh is attempted.
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_STS_ENDPOINT
```
public static final String ASSUMED_ROLE_STS_ENDPOINT
```
    Security Token Service Endpoint: "fs.s3a.assumed.role.sts.endpoint". If unset, uses the default endpoint.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_ASSUMED_ROLE_STS_ENDPOINT
```
public static final String DEFAULT_ASSUMED_ROLE_STS_ENDPOINT
```
    Default endpoint for session tokens: "". This is the central STS endpoint which, for v3 signing, can issue STS tokens for any region.
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_STS_ENDPOINT_REGION
```
public static final String ASSUMED_ROLE_STS_ENDPOINT_REGION
```
    Region for the STS endpoint; needed if the endpoint is set to anything other then the central one.: "fs.s3a.assumed.role.sts.endpoint.region".
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_STS_ENDPOINT_REGION_DEFAULT
```
public static final String ASSUMED_ROLE_STS_ENDPOINT_REGION_DEFAULT
```
    Default value for the STS endpoint region; needed for v4 signing: "".
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_SESSION_DURATION_DEFAULT
```
public static final String ASSUMED_ROLE_SESSION_DURATION_DEFAULT
```
    Default duration of an assumed role: "1h".
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_CREDENTIALS_PROVIDER
```
public static final String ASSUMED_ROLE_CREDENTIALS_PROVIDER
```
    List of providers to authenticate for the assumed role: "fs.s3a.assumed.role.credentials.provider".
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_POLICY
```
public static final String ASSUMED_ROLE_POLICY
```
    JSON policy containing the policy to apply to the role: "fs.s3a.assumed.role.policy". This is not used for delegation tokens, which generate the policy automatically, and restrict it to the S3, KMS and S3Guard services needed.
    
    See Also:
    
    Constant Field Values
  - ASSUMED_ROLE_CREDENTIALS_DEFAULT
```
public static final String ASSUMED_ROLE_CREDENTIALS_DEFAULT
```
    See Also:
    
    Constant Field Values
  - MAX_TOTAL_TASKS
```
public static final String MAX_TOTAL_TASKS
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MAX_TOTAL_TASKS
```
public static final int DEFAULT_MAX_TOTAL_TASKS
```
    See Also:
    
    Constant Field Values
  - MAXIMUM_CONNECTIONS
```
public static final String MAXIMUM_CONNECTIONS
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MAXIMUM_CONNECTIONS
```
public static final int DEFAULT_MAXIMUM_CONNECTIONS
```
    See Also:
    
    Constant Field Values
  - SECURE_CONNECTIONS
```
public static final String SECURE_CONNECTIONS
```
    See Also:
    
    Constant Field Values
  - DEFAULT_SECURE_CONNECTIONS
```
public static final boolean DEFAULT_SECURE_CONNECTIONS
```
    See Also:
    
    Constant Field Values
  - SSL_CHANNEL_MODE
```
public static final String SSL_CHANNEL_MODE
```
    See Also:
    
    Constant Field Values
  - DEFAULT_SSL_CHANNEL_MODE
```
public static final org.apache.hadoop.security.ssl.DelegatingSSLSocketFactory.SSLChannelMode DEFAULT_SSL_CHANNEL_MODE
```
  - ENDPOINT
```
public static final String ENDPOINT
```
    Endpoint. For v4 signing and/or better performance, this should be the specific endpoint of the region in which the bucket is hosted.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_ENDPOINT
```
public static final String DEFAULT_ENDPOINT
```
    Default value of s3 endpoint: "". It tells the AWS client to work it out by asking the central endpoint where the bucket lives; caching that value in the client for the life of the process.
    Note: previously this constant was defined as CENTRAL_ENDPOINT, however the actual S3A client code used "" as the default when ENDPOINT was unset. As core-default.xml also set the endpoint to "", the empty string has long been the real default value.
    
    See Also:
    
    Constant Field Values
  - CENTRAL_ENDPOINT
```
public static final String CENTRAL_ENDPOINT
```
    The central endpoint :"s3.amazonaws.com".
    
    See Also:
    
    Constant Field Values
  - PATH_STYLE_ACCESS
```
public static final String PATH_STYLE_ACCESS
```
    See Also:
    
    Constant Field Values
  - PROXY_HOST
```
public static final String PROXY_HOST
```
    See Also:
    
    Constant Field Values
  - PROXY_PORT
```
public static final String PROXY_PORT
```
    See Also:
    
    Constant Field Values
  - PROXY_USERNAME
```
public static final String PROXY_USERNAME
```
    See Also:
    
    Constant Field Values
  - PROXY_PASSWORD
```
public static final String PROXY_PASSWORD
```
    See Also:
    
    Constant Field Values
  - PROXY_DOMAIN
```
public static final String PROXY_DOMAIN
```
    See Also:
    
    Constant Field Values
  - PROXY_WORKSTATION
```
public static final String PROXY_WORKSTATION
```
    See Also:
    
    Constant Field Values
  - MAX_ERROR_RETRIES
```
public static final String MAX_ERROR_RETRIES
```
    Number of times the AWS client library should retry errors before escalating to the S3A code: "fs.s3a.attempts.maximum".
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MAX_ERROR_RETRIES
```
public static final int DEFAULT_MAX_ERROR_RETRIES
```
    Default number of times the AWS client library should retry errors before escalating to the S3A code: 10.
    
    See Also:
    
    Constant Field Values
  - EXPERIMENTAL_AWS_INTERNAL_THROTTLING
```
@InterfaceStability.Unstable
public static final String EXPERIMENTAL_AWS_INTERNAL_THROTTLING
```
    Experimental/Unstable feature: should the AWS client library retry throttle responses before escalating to the S3A code: "fs.s3a.experimental.aws.s3.throttling". When set to false, the S3A connector sees all S3 throttle events, And so can update it counters and the metrics, and use its own retry policy. However, this may have adverse effects on some operations where the S3A code cannot retry as efficiently as the AWS client library. This only applies to S3 operations, not to DynamoDB or other services.
    
    See Also:
    
    Constant Field Values
  - EXPERIMENTAL_AWS_INTERNAL_THROTTLING_DEFAULT
```
@InterfaceStability.Unstable
public static final boolean EXPERIMENTAL_AWS_INTERNAL_THROTTLING_DEFAULT
```
    Default value of EXPERIMENTAL_AWS_INTERNAL_THROTTLING, value: true.
    
    See Also:
    
    Constant Field Values
  - ESTABLISH_TIMEOUT
```
public static final String ESTABLISH_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - DEFAULT_ESTABLISH_TIMEOUT
```
public static final int DEFAULT_ESTABLISH_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - SOCKET_TIMEOUT
```
public static final String SOCKET_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - DEFAULT_SOCKET_TIMEOUT
```
public static final int DEFAULT_SOCKET_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - REQUEST_TIMEOUT
```
public static final String REQUEST_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - DEFAULT_REQUEST_TIMEOUT
```
public static final int DEFAULT_REQUEST_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - SOCKET_SEND_BUFFER
```
public static final String SOCKET_SEND_BUFFER
```
    See Also:
    
    Constant Field Values
  - DEFAULT_SOCKET_SEND_BUFFER
```
public static final int DEFAULT_SOCKET_SEND_BUFFER
```
    See Also:
    
    Constant Field Values
  - SOCKET_RECV_BUFFER
```
public static final String SOCKET_RECV_BUFFER
```
    See Also:
    
    Constant Field Values
  - DEFAULT_SOCKET_RECV_BUFFER
```
public static final int DEFAULT_SOCKET_RECV_BUFFER
```
    See Also:
    
    Constant Field Values
  - MAX_PAGING_KEYS
```
public static final String MAX_PAGING_KEYS
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MAX_PAGING_KEYS
```
public static final int DEFAULT_MAX_PAGING_KEYS
```
    See Also:
    
    Constant Field Values
  - MAX_THREADS
```
public static final String MAX_THREADS
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MAX_THREADS
```
public static final int DEFAULT_MAX_THREADS
```
    See Also:
    
    Constant Field Values
  - KEEPALIVE_TIME
```
public static final String KEEPALIVE_TIME
```
    See Also:
    
    Constant Field Values
  - DEFAULT_KEEPALIVE_TIME
```
public static final int DEFAULT_KEEPALIVE_TIME
```
    See Also:
    
    Constant Field Values
  - MULTIPART_SIZE
```
public static final String MULTIPART_SIZE
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MULTIPART_SIZE
```
public static final long DEFAULT_MULTIPART_SIZE
```
    See Also:
    
    Constant Field Values
  - MIN_MULTIPART_THRESHOLD
```
public static final String MIN_MULTIPART_THRESHOLD
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MIN_MULTIPART_THRESHOLD
```
public static final long DEFAULT_MIN_MULTIPART_THRESHOLD
```
    See Also:
    
    Constant Field Values
  - ENABLE_MULTI_DELETE
```
public static final String ENABLE_MULTI_DELETE
```
    See Also:
    
    Constant Field Values
  - BULK_DELETE_PAGE_SIZE
```
public static final String BULK_DELETE_PAGE_SIZE
```
    Number of objects to delete in a single multi-object delete "fs.s3a.bulk.delete.page.size". Max: 1000. A bigger value it means fewer POST requests when deleting a directory tree with many objects. However, as you are limited to only a a few thousand requests per second against a single partition of an S3 bucket, a large page size can easily overload the bucket and so trigger throttling. Furthermore, as the reaction to this request is being throttled is simply to retry it -it can take a while for the situation to go away. While a large value may give better numbers on tests and benchmarks where only a single operations being executed, once multiple applications start working with the same bucket these large deletes can be highly disruptive.
    
    See Also:
    
    Constant Field Values
  - BULK_DELETE_PAGE_SIZE_DEFAULT
```
public static final int BULK_DELETE_PAGE_SIZE_DEFAULT
```
    Default Number of objects to delete in a single multi-object delete: 250.
    
    See Also:
    
    Constant Field Values
  - BUFFER_DIR
```
public static final String BUFFER_DIR
```
    See Also:
    
    Constant Field Values
  - FAST_UPLOAD
```
@Deprecated
public static final String FAST_UPLOAD
```
    Deprecated.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_FAST_UPLOAD
```
@Deprecated
public static final boolean DEFAULT_FAST_UPLOAD
```
    Deprecated.
    
    See Also:
    
    Constant Field Values
  - FAST_BUFFER_SIZE
```
@Deprecated
public static final String FAST_BUFFER_SIZE
```
    Deprecated.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_FAST_BUFFER_SIZE
```
public static final int DEFAULT_FAST_BUFFER_SIZE
```
    See Also:
    
    Constant Field Values
  - FAST_UPLOAD_BUFFER
```
public static final String FAST_UPLOAD_BUFFER
```
    What buffer to use. Default is FAST_UPLOAD_BUFFER_DISK Value: "fs.s3a.fast.upload.buffer"
    
    See Also:
    
    Constant Field Values
  - FAST_UPLOAD_BUFFER_DISK
```
public static final String FAST_UPLOAD_BUFFER_DISK
```
    Buffer blocks to disk: "disk". Capacity is limited to available disk space.
    
    See Also:
    
    Constant Field Values
  - FAST_UPLOAD_BUFFER_ARRAY
```
public static final String FAST_UPLOAD_BUFFER_ARRAY
```
    Use an in-memory array. Fast but will run of heap rapidly: "array".
    
    See Also:
    
    Constant Field Values
  - FAST_UPLOAD_BYTEBUFFER
```
public static final String FAST_UPLOAD_BYTEBUFFER
```
    Use a byte buffer. May be more memory efficient than the FAST_UPLOAD_BUFFER_ARRAY: "bytebuffer".
    
    See Also:
    
    Constant Field Values
  - DEFAULT_FAST_UPLOAD_BUFFER
```
public static final String DEFAULT_FAST_UPLOAD_BUFFER
```
    Default buffer option: "disk".
    
    See Also:
    
    Constant Field Values
  - FAST_UPLOAD_ACTIVE_BLOCKS
```
public static final String FAST_UPLOAD_ACTIVE_BLOCKS
```
    Maximum Number of blocks a single output stream can have active (uploading, or queued to the central FileSystem instance's pool of queued operations. This stops a single stream overloading the shared thread pool. "fs.s3a.fast.upload.active.blocks"
    Default is DEFAULT_FAST_UPLOAD_ACTIVE_BLOCKS
    
    See Also:
    
    Constant Field Values
  - DEFAULT_FAST_UPLOAD_ACTIVE_BLOCKS
```
public static final int DEFAULT_FAST_UPLOAD_ACTIVE_BLOCKS
```
    Limit of queued block upload operations before writes block. Value: 4
    
    See Also:
    
    Constant Field Values
  - DOWNGRADE_SYNCABLE_EXCEPTIONS
```
public static final String DOWNGRADE_SYNCABLE_EXCEPTIONS
```
    Rather than raise an exception when an attempt is made to call the Syncable APIs, warn and downgrade. Value: "fs.s3a.downgrade.syncable.exceptions".
    
    See Also:
    
    Constant Field Values
  - DOWNGRADE_SYNCABLE_EXCEPTIONS_DEFAULT
```
public static final boolean DOWNGRADE_SYNCABLE_EXCEPTIONS_DEFAULT
```
    Default value for syncable invocation. Value: true.
    
    See Also:
    
    Constant Field Values
  - EXECUTOR_CAPACITY
```
public static final String EXECUTOR_CAPACITY
```
    The capacity of executor queues for operations other than block upload, where FAST_UPLOAD_ACTIVE_BLOCKS is used instead. This should be less than MAX_THREADS for fair submission. Value: "fs.s3a.executor.capacity".
    
    See Also:
    
    Constant Field Values
  - DEFAULT_EXECUTOR_CAPACITY
```
public static final int DEFAULT_EXECUTOR_CAPACITY
```
    The capacity of executor queues for operations other than block upload, where FAST_UPLOAD_ACTIVE_BLOCKS is used instead. Value: 16
    
    See Also:
    
    Constant Field Values
  - CANNED_ACL
```
public static final String CANNED_ACL
```
    See Also:
    
    Constant Field Values
  - DEFAULT_CANNED_ACL
```
public static final String DEFAULT_CANNED_ACL
```
    See Also:
    
    Constant Field Values
  - PURGE_EXISTING_MULTIPART
```
public static final String PURGE_EXISTING_MULTIPART
```
    See Also:
    
    Constant Field Values
  - DEFAULT_PURGE_EXISTING_MULTIPART
```
public static final boolean DEFAULT_PURGE_EXISTING_MULTIPART
```
    See Also:
    
    Constant Field Values
  - PURGE_EXISTING_MULTIPART_AGE
```
public static final String PURGE_EXISTING_MULTIPART_AGE
```
    See Also:
    
    Constant Field Values
  - DEFAULT_PURGE_EXISTING_MULTIPART_AGE
```
public static final long DEFAULT_PURGE_EXISTING_MULTIPART_AGE
```
    See Also:
    
    Constant Field Values
  - SERVER_SIDE_ENCRYPTION_ALGORITHM
```
@Deprecated
public static final String SERVER_SIDE_ENCRYPTION_ALGORITHM
```
    Deprecated.
    
    s3 server-side encryption, see S3AEncryptionMethods for valid options. "fs.s3a.server-side-encryption-algorithm"
    
    See Also:
    
    Constant Field Values
  - SERVER_SIDE_ENCRYPTION_AES256
```
@Deprecated
public static final String SERVER_SIDE_ENCRYPTION_AES256
```
    Deprecated.
    
    The standard encryption algorithm AWS supports. Different implementations may support others (or none). Use the S3AEncryptionMethods instead when configuring which Server Side Encryption to use. Value: ""AES256"".
    
    See Also:
    
    Constant Field Values
  - SERVER_SIDE_ENCRYPTION_KEY
```
@Deprecated
public static final String SERVER_SIDE_ENCRYPTION_KEY
```
    Deprecated.
    
    Used to specify which AWS KMS key to use if SERVER_SIDE_ENCRYPTION_ALGORITHM is SSE-KMS (will default to aws/s3 master key if left blank). With with SSE_C, the base-64 encoded AES 256 key. May be set within a JCEKS file. Value: ""fs.s3a.server-side-encryption.key"".
    
    See Also:
    
    Constant Field Values
  - S3_ENCRYPTION_ALGORITHM
```
public static final String S3_ENCRYPTION_ALGORITHM
```
    Set S3-server side encryption(SSE) or S3-Client side encryption(CSE) algorithm. Check S3AEncryptionMethods for valid options.
    value: "fs.s3a.encryption.algorithm"
    
    See Also:
    
    Constant Field Values
  - S3_ENCRYPTION_KEY
```
public static final String S3_ENCRYPTION_KEY
```
    Set S3-SSE or S3-CSE encryption Key if required.
    Note:
    - In case of S3-CSE this value needs to be set for CSE to work.
    - In case of S3-SSE follow SERVER_SIDE_ENCRYPTION_KEY
    value:"fs.s3a.encryption.key"
    See Also:
    
    Constant Field Values
  - CUSTOM_SIGNERS
```
public static final String CUSTOM_SIGNERS
```
    List of custom Signers. The signer class will be loaded, and the signer name will be associated with this signer class in the S3 SDK. Examples CustomSigner -> 'CustomSigner:org.apache...CustomSignerClass' CustomSigners -> 'CSigner1:CSigner1Class,CSigner2:CSigner2Class' Initializer -> 'CSigner1:CSigner1Class:CSigner1InitializerClass' With Existing -> 'AWS4Signer,CSigner1,CSigner2:CSigner2Class'
    
    See Also:
    
    Constant Field Values
  - SIGNING_ALGORITHM
```
public static final String SIGNING_ALGORITHM
```
    There's 3 parameters that can be used to specify a non-default signing algorithm.
    fs.s3a.signing-algorithm - This property has existed for the longest time. If specified, without either of the other 2 properties being specified, this signing algorithm will be used for S3 and DDB (S3Guard).
    The other 2 properties override this value for S3 or DDB.
    fs.s3a.s3.signing-algorithm - Allows overriding the S3 Signing algorithm. This does not affect DDB. Specifying this property without specifying fs.s3a.signing-algorithm will only update the signing algorithm for S3 requests, and the default will be used for DDB.
    fs.s3a.ddb.signing-algorithm - Allows overriding the DDB Signing algorithm. This does not affect S3. Specifying this property without specifying fs.s3a.signing-algorithm will only update the signing algorithm for DDB requests, and the default will be used for S3.
    
    See Also:
    
    Constant Field Values
  - SIGNING_ALGORITHM_S3
```
public static final String SIGNING_ALGORITHM_S3
```
  - SIGNING_ALGORITHM_DDB
```
public static final String SIGNING_ALGORITHM_DDB
```
  - SIGNING_ALGORITHM_STS
```
public static final String SIGNING_ALGORITHM_STS
```
  - S3N_FOLDER_SUFFIX
```
public static final String S3N_FOLDER_SUFFIX
```
    See Also:
    
    Constant Field Values
  - FS_S3A_BLOCK_SIZE
```
public static final String FS_S3A_BLOCK_SIZE
```
    See Also:
    
    Constant Field Values
  - FS_S3A
```
public static final String FS_S3A
```
    See Also:
    
    Constant Field Values
  - FS_S3A_PREFIX
```
public static final String FS_S3A_PREFIX
```
    Prefix for all S3A properties: "fs.s3a.".
    
    See Also:
    
    Constant Field Values
  - FS_S3A_BUCKET_PREFIX
```
public static final String FS_S3A_BUCKET_PREFIX
```
    Prefix for S3A bucket-specific properties: "fs.s3a.bucket.".
    
    See Also:
    
    Constant Field Values
  - S3A_DEFAULT_PORT
```
public static final int S3A_DEFAULT_PORT
```
    Default port for this is 443: HTTPS.
    
    See Also:
    
    Constant Field Values
  - USER_AGENT_PREFIX
```
public static final String USER_AGENT_PREFIX
```
    See Also:
    
    Constant Field Values
  - AUTHORITATIVE_PATH
```
public static final String AUTHORITATIVE_PATH
```
    Whether or not to allow MetadataStore to be source of truth for a path prefix
    
    See Also:
    
    Constant Field Values
  - DEFAULT_AUTHORITATIVE_PATH
```
public static final String[] DEFAULT_AUTHORITATIVE_PATH
```
  - METADATASTORE_AUTHORITATIVE
```
public static final String METADATASTORE_AUTHORITATIVE
```
    Whether or not to allow MetadataStore to be source of truth.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_METADATASTORE_AUTHORITATIVE
```
public static final boolean DEFAULT_METADATASTORE_AUTHORITATIVE
```
    See Also:
    
    Constant Field Values
  - S3A_BUCKET_PROBE
```
public static final String S3A_BUCKET_PROBE
```
    Bucket validation parameter which can be set by client. This will be used in S3AFileSystem.initialize(URI, Configuration). Value: "fs.s3a.bucket.probe"
    
    See Also:
    
    Constant Field Values
  - S3A_BUCKET_PROBE_DEFAULT
```
public static final int S3A_BUCKET_PROBE_DEFAULT
```
    Default value of bucket validation parameter. An existence of bucket will be validated using S3AFileSystem.verifyBucketExistsV2(). Value: 0
    
    See Also:
    
    Constant Field Values
  - METADATASTORE_METADATA_TTL
```
public static final String METADATASTORE_METADATA_TTL
```
    How long a directory listing in the MS is considered as authoritative.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_METADATASTORE_METADATA_TTL
```
public static final long DEFAULT_METADATASTORE_METADATA_TTL
```
    Default TTL in milliseconds: 15 minutes.
  - READAHEAD_RANGE
```
public static final String READAHEAD_RANGE
```
    read ahead buffer size to prevent connection re-establishments.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_READAHEAD_RANGE
```
public static final long DEFAULT_READAHEAD_RANGE
```
    See Also:
    
    Constant Field Values
  - INPUT_FADVISE
```
@InterfaceStability.Unstable
public static final String INPUT_FADVISE
```
    Which input strategy to use for buffering, seeking and similar when reading data. Value: "fs.s3a.experimental.input.fadvise"
    
    See Also:
    
    Constant Field Values
  - INPUT_FADV_NORMAL
```
@InterfaceStability.Unstable
public static final String INPUT_FADV_NORMAL
```
    General input. Some seeks, some reads. Value: "normal"
    
    See Also:
    
    Constant Field Values
  - INPUT_FADV_SEQUENTIAL
```
@InterfaceStability.Unstable
public static final String INPUT_FADV_SEQUENTIAL
```
    Optimized for sequential access. Value: "sequential"
    
    See Also:
    
    Constant Field Values
  - INPUT_FADV_RANDOM
```
@InterfaceStability.Unstable
public static final String INPUT_FADV_RANDOM
```
    Optimized purely for random seek+read/positionedRead operations; The performance of sequential IO may be reduced in exchange for more efficient seek() operations. Value: "random"
    
    See Also:
    
    Constant Field Values
  - STREAM_READ_GAUGE_INPUT_POLICY
```
public static final String STREAM_READ_GAUGE_INPUT_POLICY
```
    Gauge name for the input policy : "stream_read_gauge_input_policy". This references an enum currently exclusive to the S3A stream.
    
    See Also:
    
    Constant Field Values
  - S3_CLIENT_FACTORY_IMPL
```
@InterfaceAudience.Private
 @InterfaceStability.Unstable
public static final String S3_CLIENT_FACTORY_IMPL
```
    See Also:
    
    Constant Field Values
  - DEFAULT_S3_CLIENT_FACTORY_IMPL
```
@InterfaceAudience.Private
 @InterfaceStability.Unstable
public static final Class<? extends S3ClientFactory> DEFAULT_S3_CLIENT_FACTORY_IMPL
```
  - MAX_MULTIPART_COUNT
```
@InterfaceAudience.Private
public static final int MAX_MULTIPART_COUNT
```
    Maximum number of partitions in a multipart upload: 10000.
    
    See Also:
    
    Constant Field Values
  - S3_METADATA_STORE_IMPL
```
public static final String S3_METADATA_STORE_IMPL
```
    See Also:
    
    Constant Field Values
  - FAIL_ON_METADATA_WRITE_ERROR
```
public static final String FAIL_ON_METADATA_WRITE_ERROR
```
    Whether to fail when there is an error writing to the metadata store.
    
    See Also:
    
    Constant Field Values
  - FAIL_ON_METADATA_WRITE_ERROR_DEFAULT
```
public static final boolean FAIL_ON_METADATA_WRITE_ERROR_DEFAULT
```
    Default value (true) for FAIL_ON_METADATA_WRITE_ERROR.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_CLI_PRUNE_AGE
```
@InterfaceStability.Unstable
public static final String S3GUARD_CLI_PRUNE_AGE
```
    Minimum period of time (in milliseconds) to keep metadata (may only be applied when a prune command is manually run).
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_REGION_KEY
```
public static final String S3GUARD_DDB_REGION_KEY
```
    The region of the DynamoDB service. This config has no default value. If the user does not set this, the S3Guard will operate table in the associated S3 bucket region.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_NAME_KEY
```
public static final String S3GUARD_DDB_TABLE_NAME_KEY
```
    The DynamoDB table name to use. This config has no default value. If the user does not set this, the S3Guard implementation will use the respective S3 bucket name.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_TAG
```
public static final String S3GUARD_DDB_TABLE_TAG
```
    A prefix for adding tags to the DDB Table upon creation. For example: fs.s3a.s3guard.ddb.table.tag.mytag
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_CREATE_KEY
```
public static final String S3GUARD_DDB_TABLE_CREATE_KEY
```
    Whether to create the DynamoDB table if the table does not exist. Value: "fs.s3a.s3guard.ddb.table.create".
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_CAPACITY_READ_KEY
```
public static final String S3GUARD_DDB_TABLE_CAPACITY_READ_KEY
```
    Read capacity when creating a table. When it and the write capacity are both "0", a per-request table is created. Value: "fs.s3a.s3guard.ddb.table.capacity.read".
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_CAPACITY_READ_DEFAULT
```
public static final long S3GUARD_DDB_TABLE_CAPACITY_READ_DEFAULT
```
    Default read capacity when creating a table. Value: 0L.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_CAPACITY_WRITE_KEY
```
public static final String S3GUARD_DDB_TABLE_CAPACITY_WRITE_KEY
```
    Write capacity when creating a table. When it and the read capacity are both "0", a per-request table is created. Value: "fs.s3a.s3guard.ddb.table.capacity.write".
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_CAPACITY_WRITE_DEFAULT
```
public static final long S3GUARD_DDB_TABLE_CAPACITY_WRITE_DEFAULT
```
    Default write capacity when creating a table. Value: 0L.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_TABLE_SSE_ENABLED
```
public static final String S3GUARD_DDB_TABLE_SSE_ENABLED
```
    Whether server-side encryption (SSE) is enabled or disabled on the table. By default it's disabled, meaning SSE is set to AWS owned CMK.
    
    See Also:
    
    SSESpecification.setEnabled(java.lang.Boolean), Constant Field Values
  - S3GUARD_DDB_TABLE_SSE_CMK
```
public static final String S3GUARD_DDB_TABLE_SSE_CMK
```
    The KMS Master Key (CMK) used for the KMS encryption on the table. To specify a CMK, this config value can be its key ID, Amazon Resource Name (ARN), alias name, or alias ARN. Users only provide this config if the key is different from the default DynamoDB KMS Master Key, which is alias/aws/dynamodb.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_BATCH_WRITE_REQUEST_LIMIT
```
public static final int S3GUARD_DDB_BATCH_WRITE_REQUEST_LIMIT
```
    The maximum put or delete requests per BatchWriteItem request. Refer to Amazon API reference for this limit.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_MAX_RETRIES
```
public static final String S3GUARD_DDB_MAX_RETRIES
```
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_MAX_RETRIES_DEFAULT
```
public static final int S3GUARD_DDB_MAX_RETRIES_DEFAULT
```
    Max retries on batched/throttled DynamoDB operations before giving up and throwing an IOException. Default is 10. See core-default.xml for more detail.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_THROTTLE_RETRY_INTERVAL
```
public static final String S3GUARD_DDB_THROTTLE_RETRY_INTERVAL
```
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_THROTTLE_RETRY_INTERVAL_DEFAULT
```
public static final String S3GUARD_DDB_THROTTLE_RETRY_INTERVAL_DEFAULT
```
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_BACKGROUND_SLEEP_MSEC_KEY
```
@InterfaceStability.Unstable
public static final String S3GUARD_DDB_BACKGROUND_SLEEP_MSEC_KEY
```
    Period of time (in milliseconds) to sleep between batches of writes. Currently only applies to prune operations, as they are naturally a lower priority than other operations.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DDB_BACKGROUND_SLEEP_MSEC_DEFAULT
```
public static final int S3GUARD_DDB_BACKGROUND_SLEEP_MSEC_DEFAULT
```
    See Also:
    
    Constant Field Values
  - S3GUARD_METASTORE_NULL
```
public static final String S3GUARD_METASTORE_NULL
```
    The default "Null" metadata store: "org.apache.hadoop.fs.s3a.s3guard.NullMetadataStore".
    
    See Also:
    
    Constant Field Values
  - S3GUARD_METASTORE_LOCAL
```
@InterfaceStability.Unstable
public static final String S3GUARD_METASTORE_LOCAL
```
    Use Local memory for the metadata: "org.apache.hadoop.fs.s3a.s3guard.LocalMetadataStore". This is not coherent across processes and must be used for testing only.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_METASTORE_LOCAL_MAX_RECORDS
```
@InterfaceStability.Unstable
public static final String S3GUARD_METASTORE_LOCAL_MAX_RECORDS
```
    Maximum number of records in LocalMetadataStore.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_S3GUARD_METASTORE_LOCAL_MAX_RECORDS
```
public static final int DEFAULT_S3GUARD_METASTORE_LOCAL_MAX_RECORDS
```
    See Also:
    
    Constant Field Values
  - S3GUARD_METASTORE_LOCAL_ENTRY_TTL
```
@InterfaceStability.Unstable
public static final String S3GUARD_METASTORE_LOCAL_ENTRY_TTL
```
    Time to live in milliseconds in LocalMetadataStore. If zero, time-based expiration is disabled.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_S3GUARD_METASTORE_LOCAL_ENTRY_TTL
```
public static final int DEFAULT_S3GUARD_METASTORE_LOCAL_ENTRY_TTL
```
    See Also:
    
    Constant Field Values
  - S3GUARD_METASTORE_DYNAMO
```
public static final String S3GUARD_METASTORE_DYNAMO
```
    Use DynamoDB for the metadata: "org.apache.hadoop.fs.s3a.s3guard.DynamoDBMetadataStore".
    
    See Also:
    
    Constant Field Values
  - S3GUARD_DISABLED_WARN_LEVEL
```
public static final String S3GUARD_DISABLED_WARN_LEVEL
```
    The warn level if S3Guard is disabled.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_S3GUARD_DISABLED_WARN_LEVEL
```
public static final String DEFAULT_S3GUARD_DISABLED_WARN_LEVEL
```
    See Also:
    
    Constant Field Values
  - FAIL_INJECT_INCONSISTENCY_KEY
```
@InterfaceStability.Unstable
public static final String FAIL_INJECT_INCONSISTENCY_KEY
```
    Inconsistency (visibility delay) injection settings.
    
    See Also:
    
    Constant Field Values
  - FAIL_INJECT_INCONSISTENCY_MSEC
```
@InterfaceStability.Unstable
public static final String FAIL_INJECT_INCONSISTENCY_MSEC
```
    See Also:
    
    Constant Field Values
  - FAIL_INJECT_INCONSISTENCY_PROBABILITY
```
@InterfaceStability.Unstable
public static final String FAIL_INJECT_INCONSISTENCY_PROBABILITY
```
    See Also:
    
    Constant Field Values
  - LIST_VERSION
```
@InterfaceStability.Unstable
public static final String LIST_VERSION
```
    S3 API level parameters.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_LIST_VERSION
```
@InterfaceStability.Unstable
public static final int DEFAULT_LIST_VERSION
```
    See Also:
    
    Constant Field Values
  - FAIL_INJECT_THROTTLE_PROBABILITY
```
@InterfaceStability.Unstable
public static final String FAIL_INJECT_THROTTLE_PROBABILITY
```
    See Also:
    
    Constant Field Values
  - FAIL_INJECT_CLIENT_FACTORY
```
@InterfaceStability.Unstable
public static final String FAIL_INJECT_CLIENT_FACTORY
```
    See Also:
    
    Constant Field Values
  - RETRY_LIMIT
```
public static final String RETRY_LIMIT
```
    Number of times to retry any repeatable S3 client request on failure, excluding throttling requests: "fs.s3a.retry.limit".
    
    See Also:
    
    Constant Field Values
  - RETRY_LIMIT_DEFAULT
```
public static final int RETRY_LIMIT_DEFAULT
```
    Default retry limit: 7.
    
    See Also:
    
    Constant Field Values
  - RETRY_INTERVAL
```
public static final String RETRY_INTERVAL
```
    Interval between retry attempts.: "fs.s3a.retry.interval".
    
    See Also:
    
    Constant Field Values
  - RETRY_INTERVAL_DEFAULT
```
public static final String RETRY_INTERVAL_DEFAULT
```
    Default retry interval: "500ms".
    
    See Also:
    
    Constant Field Values
  - RETRY_THROTTLE_LIMIT
```
public static final String RETRY_THROTTLE_LIMIT
```
    Number of times to retry any throttled request: "fs.s3a.retry.throttle.limit".
    
    See Also:
    
    Constant Field Values
  - RETRY_THROTTLE_LIMIT_DEFAULT
```
public static final int RETRY_THROTTLE_LIMIT_DEFAULT
```
    Default throttled retry limit: 20.
    
    See Also:
    
    Constant Field Values
  - RETRY_THROTTLE_INTERVAL
```
public static final String RETRY_THROTTLE_INTERVAL
```
    Interval between retry attempts on throttled requests: "fs.s3a.retry.throttle.interval".
    
    See Also:
    
    Constant Field Values
  - RETRY_THROTTLE_INTERVAL_DEFAULT
```
public static final String RETRY_THROTTLE_INTERVAL_DEFAULT
```
    Default throttled retry interval: "500ms".
    
    See Also:
    
    Constant Field Values
  - ETAG_CHECKSUM_ENABLED
```
public static final String ETAG_CHECKSUM_ENABLED
```
    Should etags be exposed as checksums?
    
    See Also:
    
    Constant Field Values
  - ETAG_CHECKSUM_ENABLED_DEFAULT
```
public static final boolean ETAG_CHECKSUM_ENABLED_DEFAULT
```
    Default value: false.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_SOURCE
```
public static final String CHANGE_DETECT_SOURCE
```
    Where to get the value to use in change detection. E.g. eTag, or versionId?
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_SOURCE_ETAG
```
public static final String CHANGE_DETECT_SOURCE_ETAG
```
    eTag as the change detection mechanism.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_SOURCE_VERSION_ID
```
public static final String CHANGE_DETECT_SOURCE_VERSION_ID
```
    Object versionId as the change detection mechanism.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_SOURCE_DEFAULT
```
public static final String CHANGE_DETECT_SOURCE_DEFAULT
```
    Default change detection mechanism: eTag.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_MODE
```
public static final String CHANGE_DETECT_MODE
```
    Mode to run change detection in. Server side comparison? Client side comparison? Client side compare and warn rather than exception? Don't bother at all?
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_MODE_CLIENT
```
public static final String CHANGE_DETECT_MODE_CLIENT
```
    Change is detected on the client side by comparing the returned id with the expected id. A difference results in RemoteFileChangedException.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_MODE_SERVER
```
public static final String CHANGE_DETECT_MODE_SERVER
```
    Change is detected by passing the expected value in the GetObject request. If the expected value is unavailable, RemoteFileChangedException is thrown.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_MODE_WARN
```
public static final String CHANGE_DETECT_MODE_WARN
```
    Change is detected on the client side by comparing the returned id with the expected id. A difference results in a WARN level message being logged.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_MODE_NONE
```
public static final String CHANGE_DETECT_MODE_NONE
```
    Change detection is turned off. Readers may see inconsistent results due to concurrent writes without any exception or warning messages. May be useful with third-party S3 API implementations that don't support one of the change detection modes.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_MODE_DEFAULT
```
public static final String CHANGE_DETECT_MODE_DEFAULT
```
    Default change detection mode: server.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_REQUIRE_VERSION
```
public static final String CHANGE_DETECT_REQUIRE_VERSION
```
    If true, raises a RemoteFileChangedException exception when S3 doesn't provide the attribute defined by fs.s3a.change.detection.source. For example, if source is versionId, but object versioning is not enabled on the bucket, or alternatively if source is eTag and a third-party S3 implementation that doesn't return eTag is used.
    When false, only a warning message will be logged for this condition.
    
    See Also:
    
    Constant Field Values
  - CHANGE_DETECT_REQUIRE_VERSION_DEFAULT
```
public static final boolean CHANGE_DETECT_REQUIRE_VERSION_DEFAULT
```
    Default change detection require version: true.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_CONSISTENCY_RETRY_LIMIT
```
public static final String S3GUARD_CONSISTENCY_RETRY_LIMIT
```
    Number of times to retry any repeatable S3 client request on failure, excluding throttling requests: "fs.s3a.s3guard.consistency.retry.limit".
    
    See Also:
    
    Constant Field Values
  - S3GUARD_CONSISTENCY_RETRY_LIMIT_DEFAULT
```
public static final int S3GUARD_CONSISTENCY_RETRY_LIMIT_DEFAULT
```
    Default retry limit: 7.
    
    See Also:
    
    Constant Field Values
  - S3GUARD_CONSISTENCY_RETRY_INTERVAL
```
public static final String S3GUARD_CONSISTENCY_RETRY_INTERVAL
```
    Initial retry interval: "fs.s3a.s3guard.consistency.retry.interval".
    
    See Also:
    
    Constant Field Values
  - S3GUARD_CONSISTENCY_RETRY_INTERVAL_DEFAULT
```
public static final String S3GUARD_CONSISTENCY_RETRY_INTERVAL_DEFAULT
```
    Default initial retry interval: "2s". The consistency retry probe uses exponential backoff, because each probe can cause the S3 load balancers to retain any 404 in its cache for longer. See HADOOP-16490.
    
    See Also:
    
    Constant Field Values
  - AWS_SERVICE_IDENTIFIER_S3
```
public static final String AWS_SERVICE_IDENTIFIER_S3
```
    See Also:
    
    Constant Field Values
  - AWS_SERVICE_IDENTIFIER_DDB
```
public static final String AWS_SERVICE_IDENTIFIER_DDB
```
    See Also:
    
    Constant Field Values
  - AWS_SERVICE_IDENTIFIER_STS
```
public static final String AWS_SERVICE_IDENTIFIER_STS
```
    See Also:
    
    Constant Field Values
  - THREAD_POOL_SHUTDOWN_DELAY_SECONDS
```
public static final int THREAD_POOL_SHUTDOWN_DELAY_SECONDS
```
    How long to wait for the thread pool to terminate when cleaning up. Value: 30 seconds.
    
    See Also:
    
    Constant Field Values
  - DIRECTORY_MARKER_POLICY
```
public static final String DIRECTORY_MARKER_POLICY
```
    Policy for directory markers. This is a new feature of HADOOP-13230 which addresses some scale, performance and permissions issues -but at the risk of backwards compatibility.
    
    See Also:
    
    Constant Field Values
  - DIRECTORY_MARKER_POLICY_DELETE
```
public static final String DIRECTORY_MARKER_POLICY_DELETE
```
    Delete directory markers. This is the backwards compatible option. Value: "delete".
    
    See Also:
    
    Constant Field Values
  - DIRECTORY_MARKER_POLICY_KEEP
```
public static final String DIRECTORY_MARKER_POLICY_KEEP
```
    Retain directory markers. Value: "keep".
    
    See Also:
    
    Constant Field Values
  - DIRECTORY_MARKER_POLICY_AUTHORITATIVE
```
public static final String DIRECTORY_MARKER_POLICY_AUTHORITATIVE
```
    Retain directory markers in authoritative directory trees only. Value: "authoritative".
    
    See Also:
    
    Constant Field Values
  - DEFAULT_DIRECTORY_MARKER_POLICY
```
public static final String DEFAULT_DIRECTORY_MARKER_POLICY
```
    Default retention policy: "delete".
    
    See Also:
    
    Constant Field Values
  - STORE_CAPABILITY_DIRECTORY_MARKER_AWARE
```
public static final String STORE_CAPABILITY_DIRECTORY_MARKER_AWARE
```
    PathCapabilities probe to verify that an S3A Filesystem has the changes needed to safely work with buckets where directoy markers have not been deleted. Value: "fs.s3a.capability.directory.marker.aware".
    
    See Also:
    
    Constant Field Values
  - STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_KEEP
```
public static final String STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_KEEP
```
    PathCapabilities probe to indicate that the filesystem keeps directory markers. Value: "fs.s3a.capability.directory.marker.policy.keep".
    
    See Also:
    
    Constant Field Values
  - STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_DELETE
```
public static final String STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_DELETE
```
    PathCapabilities probe to indicate that the filesystem deletes directory markers. Value: "fs.s3a.capability.directory.marker.policy.delete".
    
    See Also:
    
    Constant Field Values
  - STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_AUTHORITATIVE
```
public static final String STORE_CAPABILITY_DIRECTORY_MARKER_POLICY_AUTHORITATIVE
```
    PathCapabilities probe to indicate that the filesystem keeps directory markers in authoritative paths only. Value: "fs.s3a.capability.directory.marker.policy.authoritative".
    
    See Also:
    
    Constant Field Values
  - STORE_CAPABILITY_DIRECTORY_MARKER_ACTION_KEEP
```
public static final String STORE_CAPABILITY_DIRECTORY_MARKER_ACTION_KEEP
```
    PathCapabilities probe to indicate that a path keeps directory markers. Value: "fs.s3a.capability.directory.marker.action.keep".
    
    See Also:
    
    Constant Field Values
  - STORE_CAPABILITY_DIRECTORY_MARKER_ACTION_DELETE
```
public static final String STORE_CAPABILITY_DIRECTORY_MARKER_ACTION_DELETE
```
    PathCapabilities probe to indicate that a path deletes directory markers. Value: "fs.s3a.capability.directory.marker.action.delete".
    
    See Also:
    
    Constant Field Values
  - XA_HEADER_PREFIX
```
public static final String XA_HEADER_PREFIX
```
    To comply with the XAttr rules, all headers of the object retrieved through the getXAttr APIs have the prefix: "header.".
    
    See Also:
    
    Constant Field Values
  - AWS_REGION
```
public static final String AWS_REGION
```
    AWS S3 region for the bucket. When set bypasses the construction of region through endpoint url.
    
    See Also:
    
    Constant Field Values
  - AWS_S3_CENTRAL_REGION
```
public static final String AWS_S3_CENTRAL_REGION
```
    The special S3 region which can be used to talk to any bucket. Value "us-east-1".
    
    See Also:
    
    Constant Field Values
  - AWS_S3_ACCESSPOINT_REQUIRED
```
public static final String AWS_S3_ACCESSPOINT_REQUIRED
```
    Require that all S3 access is made through Access Points.
    
    See Also:
    
    Constant Field Values

Class Constants

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

HADOOP_TMP_DIR

MULTIPART_MIN_SIZE

ACCESS_KEY

SECRET_KEY

AWS_CREDENTIALS_PROVIDER

S3A_SECURITY_CREDENTIAL_PROVIDER_PATH

SESSION_TOKEN

ASSUMED_ROLE_ARN

ASSUMED_ROLE_SESSION_NAME

ASSUMED_ROLE_SESSION_DURATION

ASSUMED_ROLE_STS_ENDPOINT

DEFAULT_ASSUMED_ROLE_STS_ENDPOINT

ASSUMED_ROLE_STS_ENDPOINT_REGION

ASSUMED_ROLE_STS_ENDPOINT_REGION_DEFAULT

ASSUMED_ROLE_SESSION_DURATION_DEFAULT

ASSUMED_ROLE_CREDENTIALS_PROVIDER

ASSUMED_ROLE_POLICY

ASSUMED_ROLE_CREDENTIALS_DEFAULT

MAX_TOTAL_TASKS

DEFAULT_MAX_TOTAL_TASKS

MAXIMUM_CONNECTIONS

DEFAULT_MAXIMUM_CONNECTIONS

SECURE_CONNECTIONS

DEFAULT_SECURE_CONNECTIONS

SSL_CHANNEL_MODE

DEFAULT_SSL_CHANNEL_MODE

ENDPOINT

DEFAULT_ENDPOINT

CENTRAL_ENDPOINT

PATH_STYLE_ACCESS

PROXY_HOST

PROXY_PORT

PROXY_USERNAME

PROXY_PASSWORD

PROXY_DOMAIN

PROXY_WORKSTATION

MAX_ERROR_RETRIES

DEFAULT_MAX_ERROR_RETRIES

EXPERIMENTAL_AWS_INTERNAL_THROTTLING

EXPERIMENTAL_AWS_INTERNAL_THROTTLING_DEFAULT

ESTABLISH_TIMEOUT

DEFAULT_ESTABLISH_TIMEOUT

SOCKET_TIMEOUT

DEFAULT_SOCKET_TIMEOUT

REQUEST_TIMEOUT

DEFAULT_REQUEST_TIMEOUT

SOCKET_SEND_BUFFER

DEFAULT_SOCKET_SEND_BUFFER

SOCKET_RECV_BUFFER

DEFAULT_SOCKET_RECV_BUFFER

MAX_PAGING_KEYS

DEFAULT_MAX_PAGING_KEYS

MAX_THREADS

DEFAULT_MAX_THREADS

KEEPALIVE_TIME

DEFAULT_KEEPALIVE_TIME

MULTIPART_SIZE

DEFAULT_MULTIPART_SIZE

MIN_MULTIPART_THRESHOLD

DEFAULT_MIN_MULTIPART_THRESHOLD

ENABLE_MULTI_DELETE

BULK_DELETE_PAGE_SIZE

BULK_DELETE_PAGE_SIZE_DEFAULT

BUFFER_DIR

FAST_UPLOAD

DEFAULT_FAST_UPLOAD

FAST_BUFFER_SIZE

DEFAULT_FAST_BUFFER_SIZE

FAST_UPLOAD_BUFFER

FAST_UPLOAD_BUFFER_DISK

FAST_UPLOAD_BUFFER_ARRAY

FAST_UPLOAD_BYTEBUFFER

DEFAULT_FAST_UPLOAD_BUFFER

FAST_UPLOAD_ACTIVE_BLOCKS

DEFAULT_FAST_UPLOAD_ACTIVE_BLOCKS