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
Fields inherited from class org.apache.hadoop.hive.ql.exec.CommonJoinOperator |
alias, condn, countAfterReport, dummyObj, dummyObjVectors, filterMap, heartbeatInterval, joinFilterObjectInspectors, joinFilters, joinValues, joinValuesObjectInspectors, joinValuesStandardObjectInspectors, LOG, noOuterJoin, NOTSKIPBIGTABLE, nullsafes, numAliases, order, rowContainerStandardObjectInspectors, spillTableDesc, totalSz |
Fields inherited from class org.apache.hadoop.hive.ql.exec.Operator |
beginTime, childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, counterNames, counterNameToEnum, counters, done, fatalErrorCntr, groupKeyObject, id, inputObjInspectors, inputRows, isLogInfoEnabled, numInputRowsCntr, numOutputRowsCntr, operatorId, out, outputObjInspector, outputRows, parentOperators, reporter, state, statsMap, timeTakenCntr, totalTime |
Methods inherited from class org.apache.hadoop.hive.ql.exec.Operator |
allInitializedParentsAreClosed, areAllParentsInitialized, assignCounterNameToEnum, augmentPlan, checkFatalErrors, cleanUpInputFileChanged, cleanUpInputFileChangedOp, clone, close, columnNamesRowResolvedCanBeObtained, dump, dump, fatalErrorMessage, forward, getAdditionalCounters, getChildOperators, getChildren, getColumnExprMap, getConf, getCounterNames, getCounterNameToEnum, getCounters, getDone, getExecContext, getGroupKeyObject, getIdentifier, getInputObjInspectors, getOperatorId, getParentOperators, getSchema, getStats, getWrappedCounterName, incrCounter, initEvaluators, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initializeChildren, initializeCounters, initializeLocalWork, initOperatorId, isUseBucketizedHiveInputFormat, jobClose, logStats, passExecContext, preorderMap, process, removeChild, removeChildAndAdoptItsChildren, removeChildren, removeParent, replaceChild, replaceParent, reset, resetId, resetLastEnumUsed, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setCounterNames, setCounterNameToEnum, setDone, setExecContext, setGroupKeyObject, setId, setInputObjInspectors, setOperatorId, setOutputCollector, setParentOperators, setReporter, setSchema, setUseBucketizedHiveInputFormat, supportUnionRemoveOptimization, updateCounters |
JoinOperator
public JoinOperator()
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<JoinDesc>
- Throws:
HiveException
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 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,
JobCloseFeedBack feedBack)
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>
Copyright © 2011 The Apache Software Foundation