org.apache.hadoop.hive.ql.session

Class SessionStateUtil

java.lang.Object

org.apache.hadoop.hive.ql.session.SessionStateUtil

public class SessionStateUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SessionStateUtil.CommitInfo Container class for job commit information.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_TABLE_LOCATION

Method Summary

Modifier and Type	Method and Description
static boolean	addCommitInfo(org.apache.hadoop.conf.Configuration conf, String tableName, String jobId, int taskNum, Map<String,String> additionalProps)
static boolean	addResource(org.apache.hadoop.conf.Configuration conf, String key, Object resource)
static void	addResourceOrThrow(org.apache.hadoop.conf.Configuration conf, String key, Object resource)
static Optional<Map<String,SessionStateUtil.CommitInfo>>	getCommitInfo(org.apache.hadoop.conf.Configuration conf, String tableName)
static Optional<String>	getProperty(org.apache.hadoop.conf.Configuration conf, String key)
static Optional<QueryState>	getQueryState(org.apache.hadoop.conf.Configuration conf)
static Optional<Object>	getResource(org.apache.hadoop.conf.Configuration conf, String key)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_TABLE_LOCATION

public static final String DEFAULT_TABLE_LOCATION

See Also:

Constant Field Values

Method Detail

getResource

public static Optional<Object> getResource(org.apache.hadoop.conf.Configuration conf,
                                           String key)

Parameters:

conf - Configuration object used for getting the query state, should contain the query id

key - The resource identifier

Returns:

The requested resource, or an empty Optional if either the SessionState, QueryState or the resource itself could not be found

getProperty

public static Optional<String> getProperty(org.apache.hadoop.conf.Configuration conf,
                                           String key)

Parameters:

conf - Configuration object used for getting the query state, should contain the query id

key - The resource identifier

Returns:

The requested string property, or an empty Optional if either the SessionState, QueryState or the resource itself could not be found, or the resource is not of type String

addResource

public static boolean addResource(org.apache.hadoop.conf.Configuration conf,
                                  String key,
                                  Object resource)

Parameters:

conf - Configuration object used for getting the query state, should contain the query id

key - The resource identifier

resource - The resource to save into the QueryState

Returns:

whether operation succeeded

addResourceOrThrow

public static void addResourceOrThrow(org.apache.hadoop.conf.Configuration conf,
                                      String key,
                                      Object resource)

getCommitInfo

public static Optional<Map<String,SessionStateUtil.CommitInfo>> getCommitInfo(org.apache.hadoop.conf.Configuration conf,
                                                                              String tableName)

Parameters:

conf - Configuration object used for getting the query state, should contain the query id

tableName - Name of the table for which the commit info should be retrieved

Returns:

the CommitInfo map. Key: jobId, Value: SessionStateUtil.CommitInfo, or empty Optional if not present

addCommitInfo

public static boolean addCommitInfo(org.apache.hadoop.conf.Configuration conf,
                                    String tableName,
                                    String jobId,
                                    int taskNum,
                                    Map<String,String> additionalProps)

Parameters:

conf - Configuration object used for getting the query state, should contain the query id

tableName - Name of the table for which the commit info should be stored

jobId - The job ID

taskNum - The number of successful tasks for the job

additionalProps - Any additional properties related to the job commit

Returns:

whether the operation succeeded

getQueryState

public static Optional<QueryState> getQueryState(org.apache.hadoop.conf.Configuration conf)