org.apache.hadoop.hive.ql.exec.tez
Class TezTask

java.lang.Object
  org.apache.hadoop.hive.ql.exec.Task<TezWork>
      org.apache.hadoop.hive.ql.exec.tez.TezTask

All Implemented Interfaces:

Serializable, Node

public class TezTask
extends Task<TezWork>

TezTask handles the execution of TezWork. Currently it executes a graph of map and reduce work using the Tez APIs directly.

See Also:

Serialized Form

Nested Class Summary

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

Task.FeedType

Field Summary

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

TezTask()

TezTask(DagUtils utils)

Method Summary

int	execute(DriverContext driverContext) This method is overridden in each Task.
String	getName() Gets the name of the node.
org.apache.tez.common.counters.TezCounters	getTezCounters()
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.
boolean	isMapRedTask()

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, initialize, isLocalMode, isMapRedLocalTask, isRootTask, isRunnable, removeDependentTask, removeFromChildrenTasks, requireLock, 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

Constructor Detail

TezTask

public TezTask()

TezTask

public TezTask(DagUtils utils)

Method Detail

getTezCounters

public org.apache.tez.common.counters.TezCounters getTezCounters()

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

isMapRedTask

public boolean isMapRedTask()

Overrides:

isMapRedTask in class Task<TezWork>

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<TezWork>

Returns:

StageType.* or null if not overridden

getName

public String getName()

Description copied from interface: Node

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

Returns:

String