org.apache.hadoop.hive.ql.exec
Class ReduceSinkOperator

java.lang.Object
  org.apache.hadoop.hive.ql.exec.Operator<T>
      org.apache.hadoop.hive.ql.exec.TerminalOperator<ReduceSinkDesc>
          org.apache.hadoop.hive.ql.exec.ReduceSinkOperator

All Implemented Interfaces:

Serializable, Cloneable, TopNHash.BinaryCollector, Node

Direct Known Subclasses:

VectorReduceSinkOperator

public class ReduceSinkOperator
extends TerminalOperator<ReduceSinkDesc>
implements Serializable, TopNHash.BinaryCollector

Reduce Sink Operator sends output to the reduce stage.

See Also:

Serialized Form

Nested Class Summary

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

Operator.OperatorFunc, Operator.State

Field Summary

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

HIVECOUNTERCREATEDFILES, HIVECOUNTERFATAL

Constructor Summary

ReduceSinkOperator()

Method Summary

void	collect(byte[] key, byte[] value, int hash)
String[]	getInputAliases()
String	getName() Implements the getName function for the Node Interface.
static String	getOperatorName()
org.apache.hadoop.hive.ql.plan.api.OperatorType	getType() Return the type of the specific operator among the types in OperatorType.
boolean	opAllowedBeforeMapJoin()
void	processOp(Object row, int tag) Process the row.
void	setInputAliases(String[] inputAliases)
void	setOutputCollector(org.apache.hadoop.mapred.OutputCollector _out)

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

acceptLimitPushdown, augmentPlan, cleanUpInputFileChanged, cleanUpInputFileChangedOp, clone, cloneOp, cloneRecursiveChildren, close, columnNamesRowResolvedCanBeObtained, dump, dump, endGroup, 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, jobCloseOp, logStats, opAllowedAfterMapJoin, opAllowedBeforeSortMergeJoin, opAllowedConvertMapJoin, passExecContext, preorderMap, processGroup, removeChild, removeChildAndAdoptItsChildren, removeChildren, removeParent, replaceChild, replaceParent, reset, resetId, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setExecContext, setGroupKeyObject, setGroupKeyObjectInspector, setId, setInputObjInspectors, setOperatorId, setOpTraits, setParentOperators, setReporter, setSchema, setStatistics, setUseBucketizedHiveInputFormat, startGroup, supportAutomaticSortMergeJoin, supportSkewJoinOptimization, supportUnionRemoveOptimization, toString, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ReduceSinkOperator

public ReduceSinkOperator()

Method Detail

setInputAliases

public void setInputAliases(String[] inputAliases)

getInputAliases

public String[] getInputAliases()

setOutputCollector

public void setOutputCollector(org.apache.hadoop.mapred.OutputCollector _out)

Overrides:

setOutputCollector in class Operator<ReduceSinkDesc>

processOp

public void processOp(Object row,
                      int tag)
               throws HiveException

Description copied from class: Operator

Process the row.

Specified by:

processOp in class Operator<ReduceSinkDesc>

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

collect

public void collect(byte[] key,
                    byte[] value,
                    int hash)
             throws IOException

Specified by:

collect in interface TopNHash.BinaryCollector

Throws:

IOException

getName

public String getName()

Description copied from class: Operator

Implements the getName function for the Node Interface.

Specified by:

getName in interface Node

Overrides:

getName in class Operator<ReduceSinkDesc>

Returns:

the name of the operator

getOperatorName

public static String getOperatorName()

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<ReduceSinkDesc>

Returns:

OperatorType.*

opAllowedBeforeMapJoin

public boolean opAllowedBeforeMapJoin()

Overrides:

opAllowedBeforeMapJoin in class Operator<ReduceSinkDesc>