org.apache.hadoop.hive.ql.exec
Class MapJoinOperator
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<MapJoinDesc>
org.apache.hadoop.hive.ql.exec.MapJoinOperator
- All Implemented Interfaces:
- Serializable, Cloneable, Node
public class MapJoinOperator
- extends AbstractMapJoinOperator<MapJoinDesc>
- implements Serializable
Map side Join operator implementation.
- See Also:
- Serialized Form
Fields inherited from class org.apache.hadoop.hive.ql.exec.CommonJoinOperator |
alias, aliasFilterTags, condn, countAfterReport, dummyObj, dummyObjVectors, filterMaps, filterTags, forwardCache, heartbeatInterval, intermediate, joinFilterObjectInspectors, joinFilters, joinValues, joinValuesObjectInspectors, joinValuesStandardObjectInspectors, noOuterJoin, NOTSKIPBIGTABLE, nullsafes, numAliases, offsets, order, rowContainerStandardObjectInspectors, skipVectors, 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.CommonJoinOperator |
checkAndGenObject, endGroup, getFilteredValue, getFilterTag, getJoinOutputObjectInspector, getNextSize, getPosToAliasMap, hasFilter, opAllowedAfterMapJoin, opAllowedBeforeMapJoin, reportProgress, setPosToAliasMap, startGroup |
Methods inherited from class org.apache.hadoop.hive.ql.exec.Operator |
acceptLimitPushdown, allInitializedParentsAreClosed, areAllParentsInitialized, assignCounterNameToEnum, augmentPlan, checkFatalErrors, cleanUpInputFileChanged, clone, close, columnNamesRowResolvedCanBeObtained, dump, dump, flush, forward, getAdditionalCounters, getChildOperators, getChildren, getColumnExprMap, getConf, getConfiguration, getCounterNames, getCounterNameToEnum, getCounters, getDone, getExecContext, getGroupKeyObject, getIdentifier, getInputObjInspectors, getNextCntr, getNumChild, getNumParent, getOperatorId, getParentOperators, getSchema, getStats, getWrappedCounterName, incrCounter, initEvaluators, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initialize, initializeChildren, initializeCounters, initializeLocalWork, initOperatorId, isUseBucketizedHiveInputFormat, jobClose, jobCloseOp, logStats, opAllowedBeforeSortMergeJoin, opAllowedConvertMapJoin, passExecContext, preorderMap, process, processGroup, 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, supportAutomaticSortMergeJoin, supportSkewJoinOptimization, supportUnionRemoveOptimization, toString, toString, updateCounters |
MapJoinOperator
public MapJoinOperator()
MapJoinOperator
public MapJoinOperator(AbstractMapJoinOperator<? extends MapJoinDesc> mjop)
initializeOp
protected void initializeOp(Configuration hconf)
throws HiveException
- Description copied from class:
Operator
- Operator specific initialization.
- Overrides:
initializeOp
in class AbstractMapJoinOperator<MapJoinDesc>
- Throws:
HiveException
fatalErrorMessage
protected void fatalErrorMessage(StringBuilder errMsg,
long counterCode)
- Description copied from class:
Operator
- Get the fatal error message based on counter's code.
- Overrides:
fatalErrorMessage
in class AbstractMapJoinOperator<MapJoinDesc>
- Parameters:
errMsg
- error message should be appended to this output parameter.counterCode
- input counter code.
generateMapMetaData
public void generateMapMetaData()
throws HiveException,
SerDeException
- Throws:
HiveException
SerDeException
cleanUpInputFileChangedOp
public void cleanUpInputFileChangedOp()
throws HiveException
- Overrides:
cleanUpInputFileChangedOp
in class Operator<MapJoinDesc>
- 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<MapJoinDesc>
- 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 abort)
throws HiveException
- Description copied from class:
CommonJoinOperator
- All done.
- Overrides:
closeOp
in class CommonJoinOperator<MapJoinDesc>
- Throws:
HiveException
getName
public String getName()
- Implements the getName function for the Node Interface.
- Specified by:
getName
in interface Node
- Overrides:
getName
in class CommonJoinOperator<MapJoinDesc>
- Returns:
- the name of the operator
getOperatorName
public static String getOperatorName()
getType
public OperatorType getType()
- Description copied from class:
Operator
- Return the type of the specific operator among the
types in OperatorType.
- Overrides:
getType
in class AbstractMapJoinOperator<MapJoinDesc>
- Returns:
- OperatorType.*
Copyright © 2012 The Apache Software Foundation