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java.lang.Object org.apache.hadoop.hive.ql.exec.Task<DependencyCollectionWork> org.apache.hadoop.hive.ql.exec.DependencyCollectionTask
public class DependencyCollectionTask
DependencyCollectionTask. Exists for the sole purpose of reducing the number of dependency edges in the task graph.
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.Task |
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Task.FeedType |
Field Summary |
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Fields inherited from class org.apache.hadoop.hive.ql.exec.Task |
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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 | |
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DependencyCollectionTask()
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Method Summary | |
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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. |
Methods inherited from class java.lang.Object |
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getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public DependencyCollectionTask()
Method Detail |
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public int execute(DriverContext driverContext)
Task
public org.apache.hadoop.hive.ql.plan.api.StageType getType()
Task
getType
in class Task<DependencyCollectionWork>
public String getName()
Node
getName
in interface Node
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