org.apache.hadoop.hive.ql.io.rcfile.merge
Class BlockMergeTask

java.lang.Object
  org.apache.hadoop.hive.ql.exec.Task<MergeWork>
      org.apache.hadoop.hive.ql.io.rcfile.merge.BlockMergeTask

All Implemented Interfaces:

Serializable, HadoopJobExecHook, Node

public class BlockMergeTask
extends Task<MergeWork>
implements Serializable, HadoopJobExecHook

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.Task

Task.FeedType

Field Summary

static String

INPUT_SEPERATOR

Fields inherited from class org.apache.hadoop.hive.ql.exec.Task

BACKUP_COMMON_JOIN, COMMON_JOIN, CONVERTED_MAPJOIN, CONVERTED_MAPJOIN_LOCAL, CONVERTED_SORTMERGEJOIN, HINTED_MAPJOIN, HINTED_MAPJOIN_LOCAL, MAPJOIN_ONLY_NOBACKUP, NO_TAG, taskCounters, taskHandle

Constructor Summary

BlockMergeTask()

Method Summary

boolean	checkFatalErrors(org.apache.hadoop.mapred.Counters ctrs, StringBuilder errMsg)
int	execute(DriverContext driverContext) This method is overridden in each Task.
String	getName() Gets the name of the node.
org.apache.hadoop.hive.ql.plan.api.StageType	getType() Should be overridden to return the type of the specific task among the types in StageType.
void	initialize(HiveConf conf, QueryPlan queryPlan, DriverContext driverContext)
void	logPlanProgress(SessionState ss)
static void	main(String[] args)
boolean	requireLock()

Methods inherited from class org.apache.hadoop.hive.ql.exec.Task

addDependentTask, done, equals, executeTask, getAndInitBackupTask, getBackupChildrenTasks, getBackupTask, getChildren, getChildTasks, getCounters, getDependentTasks, getDriverContext, getFeedSubscribers, getId, getInitialized, getJobID, getParentTasks, getQueryPlan, getQueued, getReducer, getResultSchema, getTaskHandle, getTaskTag, getTopOperators, getWork, hashCode, hasReduce, ifRetryCmdWhenFail, isLocalMode, isMapRedLocalTask, isMapRedTask, isRootTask, isRunnable, removeDependentTask, removeFromChildrenTasks, setBackupChildrenTasks, setBackupTask, setChildTasks, setConsole, setDone, setFeedSubscribers, setId, setInitialized, setLocalMode, setParentTasks, setQueryPlan, setQueued, setRetryCmdWhenFail, setRootTask, setStarted, setTaskTag, setWork, shutdown, started, subscribeFeed, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

INPUT_SEPERATOR

public static String INPUT_SEPERATOR

Constructor Detail

BlockMergeTask

public BlockMergeTask()

Method Detail

initialize

public void initialize(HiveConf conf,
                       QueryPlan queryPlan,
                       DriverContext driverContext)

Overrides:

initialize in class Task<MergeWork>

requireLock

public boolean requireLock()

Overrides:

requireLock in class Task<MergeWork>

execute

public int execute(DriverContext driverContext)

Description copied from class: Task

This method is overridden in each Task. TODO execute should return a TaskHandle.

Returns:

status of executing the task

getName

public String getName()

Description copied from interface: Node

Gets the name of the node. This is used in the rule dispatchers.

Specified by:

getName in interface Node

Returns:

String

main

public static void main(String[] args)

getType

public org.apache.hadoop.hive.ql.plan.api.StageType getType()

Description copied from class: Task

Should be overridden to return the type of the specific task among the types in StageType.

Specified by:

getType in class Task<MergeWork>

Returns:

StageType.* or null if not overridden

checkFatalErrors

public boolean checkFatalErrors(org.apache.hadoop.mapred.Counters ctrs,
                                StringBuilder errMsg)

Specified by:

checkFatalErrors in interface HadoopJobExecHook

logPlanProgress

public void logPlanProgress(SessionState ss)
                     throws IOException

Specified by:

logPlanProgress in interface HadoopJobExecHook

Throws:

IOException