org.apache.hadoop.hive.ql.exec.vector

Class VectorGroupByOperator

java.lang.Object

org.apache.hadoop.hive.ql.exec.Operator<GroupByDesc>

org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator

All Implemented Interfaces:

Serializable, Cloneable, VectorizationContextRegion, Node

public class VectorGroupByOperator
extends Operator<GroupByDesc>
implements VectorizationContextRegion

Vectorized GROUP BY operator implementation. Consumes the vectorized input and stores the aggregate operators' intermediate states. Emits row mode output.

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

alias, childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, CONTEXT_NAME_KEY, done, groupKeyObject, HIVECOUNTERCREATEDFILES, HIVECOUNTERFATAL, id, inputObjInspectors, isLogDebugEnabled, isLogInfoEnabled, isLogTraceEnabled, operatorId, out, outputObjInspector, parentOperators, PLOG, reporter, state, statsMap

Constructor Summary

Constructors

Constructor and Description
VectorGroupByOperator()
VectorGroupByOperator(VectorizationContext vContext, OperatorDesc conf)

Method Summary

Methods

Modifier and Type	Method and Description
void	closeOp(boolean aborted) Operator specific close routine.
void	endGroup()
VectorAggregateExpression[]	getAggregators()
VectorExpression[]	getKeyExpressions()
static String	getOperatorName()
VectorizationContext	getOuputVectorizationContext()
OperatorType	getType() Return the type of the specific operator among the types in OperatorType.
protected Collection<Future<?>>	initializeOp(org.apache.hadoop.conf.Configuration hconf) Operator specific initialization.
void	process(Object row, int tag) Process the row.
void	setAggregators(VectorAggregateExpression[] aggregators)
void	setKeyExpressions(VectorExpression[] keyExpressions)
void	startGroup()

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

acceptLimitPushdown, allInitializedParentsAreClosed, areAllParentsInitialized, augmentPlan, cleanUpInputFileChanged, cleanUpInputFileChangedOp, clone, cloneOp, cloneRecursiveChildren, close, columnNamesRowResolvedCanBeObtained, completeInitializationOp, createDummy, defaultEndGroup, defaultStartGroup, dump, dump, flush, forward, getAdditionalCounters, getChildOperators, getChildren, getColumnExprMap, getConf, getConfiguration, getDone, getExecContext, getGroupKeyObject, getIdentifier, getInputObjInspectors, getName, getNextCntr, getNumChild, getNumParent, getOperatorId, getOpTraits, getOutputObjInspector, getParentOperators, getSchema, getStatistics, getStats, initEvaluators, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initialize, initializeChildren, initializeLocalWork, initOperatorId, isUseBucketizedHiveInputFormat, jobClose, jobCloseOp, logStats, opAllowedAfterMapJoin, opAllowedBeforeMapJoin, opAllowedBeforeSortMergeJoin, opAllowedConvertMapJoin, passExecContext, preorderMap, processGroup, removeChild, removeChildAndAdoptItsChildren, removeChildren, removeParent, replaceChild, replaceParent, reset, resetId, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setDone, setExecContext, setGroupKeyObject, setId, setInputContext, setInputObjInspectors, setOperatorId, setOpTraits, setOutputCollector, setParentOperators, setReporter, setSchema, setStatistics, setUseBucketizedHiveInputFormat, supportAutomaticSortMergeJoin, supportSkewJoinOptimization, supportUnionRemoveOptimization, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

VectorGroupByOperator

public VectorGroupByOperator(VectorizationContext vContext,
                     OperatorDesc conf)
                      throws HiveException

Throws:

HiveException

VectorGroupByOperator

public VectorGroupByOperator()

Method Detail

initializeOp

protected Collection<Future<?>> initializeOp(org.apache.hadoop.conf.Configuration hconf)
                                      throws HiveException

Description copied from class: Operator

Operator specific initialization.

Overrides:

initializeOp in class Operator<GroupByDesc>

Throws:

HiveException

startGroup

public void startGroup()
                throws HiveException

Overrides:

startGroup in class Operator<GroupByDesc>

Throws:

HiveException

endGroup

public void endGroup()
              throws HiveException

Overrides:

endGroup in class Operator<GroupByDesc>

Throws:

HiveException

process

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

Description copied from class: Operator

Process the row.

Specified by:

process in class Operator<GroupByDesc>

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

closeOp

public void closeOp(boolean aborted)
             throws HiveException

Description copied from class: Operator

Operator specific close routine. Operators which inherents this class should overwrite this funtion for their specific cleanup routine.

Overrides:

closeOp in class Operator<GroupByDesc>

Throws:

HiveException

getOperatorName

public static String getOperatorName()

getKeyExpressions

public VectorExpression[] getKeyExpressions()

setKeyExpressions

public void setKeyExpressions(VectorExpression[] keyExpressions)

getAggregators

public VectorAggregateExpression[] getAggregators()

setAggregators

public void setAggregators(VectorAggregateExpression[] aggregators)

getOuputVectorizationContext

public VectorizationContext getOuputVectorizationContext()

Specified by:

getOuputVectorizationContext in interface VectorizationContextRegion

getType

public 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<GroupByDesc>

Returns:

OperatorType.*