Package io.trino.plugin.deltalake.transactionlog.writer

Class S3TransactionLogSynchronizer

java.lang.Object

io.trino.plugin.deltalake.transactionlog.writer.S3TransactionLogSynchronizer

All Implemented Interfaces:

TransactionLogSynchronizer

public class S3TransactionLogSynchronizer
extends Object
implements TransactionLogSynchronizer

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	S3TransactionLogSynchronizer.LockFileContents

Field Summary

Fields

Modifier and Type	Field	Description
static final io.airlift.log.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
S3TransactionLogSynchronizer(TrinoFileSystemFactory fileSystemFactory, io.airlift.json.JsonCodec<S3TransactionLogSynchronizer.LockFileContents> lockFileContentesCodec)

Method Summary

Modifier and Type	Method	Description
boolean	isUnsafe()	Whether or not writes using this Synchronizer need to be enabled with the "delta.enable-non-concurrent-writes" config property.
static String	parseEntryFilename(String lockFilename)
void	write(ConnectorSession session, String clusterId, org.apache.hadoop.fs.Path newLogEntryPath, byte[] entryContents)	Performs atomic write of transaction log entry file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

LOG

public static final io.airlift.log.Logger LOG

Constructor Details

S3TransactionLogSynchronizer

@Inject
public S3TransactionLogSynchronizer(TrinoFileSystemFactory fileSystemFactory,
 io.airlift.json.JsonCodec<S3TransactionLogSynchronizer.LockFileContents> lockFileContentesCodec)

Method Details

isUnsafe

public boolean isUnsafe()

Description copied from interface: TransactionLogSynchronizer

Whether or not writes using this Synchronizer need to be enabled with the "delta.enable-non-concurrent-writes" config property.

Specified by:

isUnsafe in interface TransactionLogSynchronizer

Returns:

False if collision detection for writes from multiple clusters is supported, else true.

write

public void write(ConnectorSession session,
 String clusterId,
 org.apache.hadoop.fs.Path newLogEntryPath,
 byte[] entryContents)

Description copied from interface: TransactionLogSynchronizer

Performs atomic write of transaction log entry file.

Specified by:

write in interface TransactionLogSynchronizer

parseEntryFilename

public static String parseEntryFilename(String lockFilename)