org.apache.hadoop.hive.ql.exec
Class AbstractMapJoinOperator<T extends MapJoinDesc>

java.lang.Object
  org.apache.hadoop.hive.ql.exec.Operator<T>
      org.apache.hadoop.hive.ql.exec.CommonJoinOperator<T>
          org.apache.hadoop.hive.ql.exec.AbstractMapJoinOperator<T>

All Implemented Interfaces:

Serializable, Cloneable, Node

Direct Known Subclasses:

MapJoinOperator, SMBMapJoinOperator

public abstract class AbstractMapJoinOperator<T extends MapJoinDesc>
extends CommonJoinOperator<T>
implements Serializable

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

protected RowContainer<List<Object>>	emptyList
protected List<ExprNodeEvaluator>[]	joinKeys The expressions for join inputs's join keys.
protected List<ObjectInspector>[]	joinKeysObjectInspectors The ObjectInspectors for the join inputs's join keys.
protected List<ObjectInspector>[]	joinKeysStandardObjectInspectors The standard ObjectInspectors for the join inputs's join keys.
protected byte	posBigTable

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

alias, aliasFilterTags, condn, countAfterReport, dummyObj, dummyObjVectors, filterMaps, filterTags, forwardCache, hconf, heartbeatInterval, intermediate, joinFilterObjectInspectors, joinFilters, joinValues, joinValuesObjectInspectors, joinValuesStandardObjectInspectors, LOG, noOuterJoin, NOTSKIPBIGTABLE, nullsafes, numAliases, offsets, order, rowContainerStandardObjectInspectors, skipVectors, spillTableDesc, totalSz

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

childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, done, groupKeyObject, groupKeyOI, HIVECOUNTERCREATEDFILES, HIVECOUNTERFATAL, id, inputObjInspectors, isLogInfoEnabled, operatorId, out, outputObjInspector, parentOperators, reporter, state, statsMap

Constructor Summary

AbstractMapJoinOperator()

AbstractMapJoinOperator(AbstractMapJoinOperator<? extends MapJoinDesc> mjop)

Method Summary

void	closeOp(boolean abort) All done.
OperatorType	getType() Return the type of the specific operator among the types in OperatorType.
protected void	initializeOp(org.apache.hadoop.conf.Configuration hconf) Operator specific initialization.

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

checkAndGenObject, endGroup, getFilteredValue, getFilterTag, getJoinOutputObjectInspector, getName, getNextSize, getOperatorName, getPosToAliasMap, hasFilter, internalForward, opAllowedAfterMapJoin, opAllowedBeforeMapJoin, reportProgress, setPosToAliasMap, startGroup

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

acceptLimitPushdown, allInitializedParentsAreClosed, areAllParentsInitialized, augmentPlan, cleanUpInputFileChanged, cleanUpInputFileChangedOp, clone, cloneOp, cloneRecursiveChildren, close, columnNamesRowResolvedCanBeObtained, defaultEndGroup, defaultStartGroup, dump, dump, flush, forward, getAdditionalCounters, getChildOperators, getChildren, getColumnExprMap, getConf, getConfiguration, getDone, getExecContext, getGroupKeyObject, getGroupKeyObjectInspector, getIdentifier, getInputObjInspectors, getNextCntr, getNumChild, getNumParent, getOperatorId, getOpTraits, getOutputObjInspector, getParentOperators, getSchema, getStatistics, getStats, initEvaluators, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initialize, initializeChildren, initializeLocalWork, initOperatorId, isUseBucketizedHiveInputFormat, jobClose, jobCloseOp, logStats, opAllowedBeforeSortMergeJoin, opAllowedConvertMapJoin, passExecContext, preorderMap, processGroup, processOp, removeChild, removeChildAndAdoptItsChildren, removeChildren, removeParent, replaceChild, replaceParent, reset, resetId, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setDone, setExecContext, setGroupKeyObject, setGroupKeyObjectInspector, setId, 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

Field Detail

joinKeys

protected transient List<ExprNodeEvaluator>[] joinKeys

The expressions for join inputs's join keys.

joinKeysObjectInspectors

protected transient List<ObjectInspector>[] joinKeysObjectInspectors

The ObjectInspectors for the join inputs's join keys.

joinKeysStandardObjectInspectors

protected transient List<ObjectInspector>[] joinKeysStandardObjectInspectors

The standard ObjectInspectors for the join inputs's join keys.

posBigTable

protected transient byte posBigTable

emptyList

protected transient RowContainer<List<Object>> emptyList

Constructor Detail

AbstractMapJoinOperator

public AbstractMapJoinOperator()

AbstractMapJoinOperator

public AbstractMapJoinOperator(AbstractMapJoinOperator<? extends MapJoinDesc> mjop)

Method Detail

initializeOp

protected void initializeOp(org.apache.hadoop.conf.Configuration hconf)
                     throws HiveException

Description copied from class: Operator

Operator specific initialization.

Overrides:

initializeOp in class CommonJoinOperator<T extends MapJoinDesc>

Throws:

HiveException

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<T extends MapJoinDesc>

Returns:

OperatorType.*

closeOp

public void closeOp(boolean abort)
             throws HiveException

Description copied from class: CommonJoinOperator

All done.

Overrides:

closeOp in class CommonJoinOperator<T extends MapJoinDesc>

Throws:

HiveException