org.apache.hadoop.hive.ql.exec
Class JoinOperator
java.lang.Object
org.apache.hadoop.hive.ql.exec.Operator<T>
org.apache.hadoop.hive.ql.exec.CommonJoinOperator<JoinDesc>
org.apache.hadoop.hive.ql.exec.JoinOperator
- All Implemented Interfaces:
- Serializable, Cloneable, Node
public class JoinOperator
- extends CommonJoinOperator<JoinDesc>
- implements Serializable
Join operator implementation.
- See Also:
- Serialized Form
Methods inherited from class org.apache.hadoop.hive.ql.exec.Operator |
acceptLimitPushdown, augmentPlan, cleanUpInputFileChanged, cleanUpInputFileChangedOp, clone, cloneOp, cloneRecursiveChildren, close, columnNamesRowResolvedCanBeObtained, dump, dump, flush, getChildOperators, getChildren, getColumnExprMap, getConf, getConfiguration, getDone, getExecContext, getGroupKeyObject, getGroupKeyObjectInspector, getIdentifier, getInputObjInspectors, getNumChild, getNumParent, getOperatorId, getOpTraits, getOutputObjInspector, getParentOperators, getSchema, getStatistics, getStats, initialize, initializeLocalWork, initOperatorId, isUseBucketizedHiveInputFormat, jobClose, logStats, opAllowedConvertMapJoin, passExecContext, preorderMap, processGroup, removeChild, removeChildAndAdoptItsChildren, removeChildren, removeParent, replaceChild, replaceParent, reset, resetId, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setExecContext, setGroupKeyObject, setGroupKeyObjectInspector, setId, setInputObjInspectors, setOperatorId, setOpTraits, setOutputCollector, setParentOperators, setReporter, setSchema, setStatistics, setUseBucketizedHiveInputFormat, supportAutomaticSortMergeJoin, supportUnionRemoveOptimization, toString, toString |
JoinOperator
public JoinOperator()
processOp
public void processOp(Object row,
int tag)
throws HiveException
- Description copied from class:
Operator
- Process the row.
- Specified by:
processOp
in class Operator<JoinDesc>
- Parameters:
row
- The object representing the row.tag
- The tag of the row usually means which parent this row comes from.
Rows with the same tag should have exactly the same rowInspector
all the time.
- Throws:
HiveException
getType
public org.apache.hadoop.hive.ql.plan.api.OperatorType getType()
- Description copied from class:
Operator
- Return the type of the specific operator among the
types in OperatorType.
- Specified by:
getType
in class Operator<JoinDesc>
- Returns:
- OperatorType.*
closeOp
public void closeOp(boolean abort)
throws HiveException
- All done.
- Overrides:
closeOp
in class CommonJoinOperator<JoinDesc>
- Throws:
HiveException
jobCloseOp
public void jobCloseOp(org.apache.hadoop.conf.Configuration hconf,
boolean success)
throws HiveException
- Overrides:
jobCloseOp
in class Operator<JoinDesc>
- Throws:
HiveException
endGroup
public void endGroup()
throws HiveException
- Forward a record of join results.
- Overrides:
endGroup
in class CommonJoinOperator<JoinDesc>
- Throws:
HiveException
supportSkewJoinOptimization
public boolean supportSkewJoinOptimization()
- Overrides:
supportSkewJoinOptimization
in class Operator<JoinDesc>
opAllowedBeforeSortMergeJoin
public boolean opAllowedBeforeSortMergeJoin()
- Overrides:
opAllowedBeforeSortMergeJoin
in class Operator<JoinDesc>
Copyright © 2014 The Apache Software Foundation. All rights reserved.