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, 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, condn, dummyObj, dummyObjVectors, joinValues, joinValuesObjectInspectors, joinValuesStandardObjectInspectors, noOuterJoin, numAliases, order, 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, numInputRowsCntr, numOutputRowsCntr, operatorId, out, outputObjInspector, outputRows, parentOperators, reporter, state, statsMap, timeTakenCntr, totalTime |
Methods inherited from class org.apache.hadoop.hive.ql.exec.CommonJoinOperator |
checkAndGenObject, computeValues, endGroup, getJoinOutputObjectInspector, getNextSize, getObjectInspectorsFromEvaluators, getPosToAliasMap, getSpillTableDesc, getSpillTableDesc, getStandardObjectInspectors, populateJoinKeyValue, setPosToAliasMap, startGroup |
Methods inherited from class org.apache.hadoop.hive.ql.exec.Operator |
allInitializedParentsAreClosed, areAllParentsInitialized, assignCounterNameToEnum, augmentPlan, checkFatalErrors, close, dump, dump, forward, getChildOperators, getChildren, getColumnExprMap, getConf, getCounterNames, getCounterNameToEnum, getCounters, getDone, getExecContext, getGroupKeyObject, getIdentifier, getOperatorId, getParentOperators, getSchema, getStats, incrCounter, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initializeChildren, initializeCounters, initializeLocalWork, initOperatorId, jobClose, logStats, passExecContext, preorderMap, process, removeChild, replaceChild, replaceParent, resetId, resetLastEnumUsed, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setCounterNames, setCounterNameToEnum, setDone, setExecContext, setGroupKeyObject, setId, setOperatorId, setOutputCollector, setParentOperators, setReporter, setSchema, updateCounters |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
mapJoinTables
protected transient Map<Byte,HashMapWrapper<MapJoinObjectKey,MapJoinObjectValue>> mapJoinTables
MapJoinOperator
public MapJoinOperator()
MapJoinOperator
public MapJoinOperator(AbstractMapJoinOperator<? extends MapJoinDesc> mjop)
getMapMetadata
public static Map<Integer,MapJoinOperator.MapJoinObjectCtx> getMapMetadata()
initializeOp
protected void initializeOp(org.apache.hadoop.conf.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.
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
getType
public int getType()
- Description copied from class:
Operator
- Should be overridden to return the type of the specific operator among the
types in OperatorType.
- Overrides:
getType
in class AbstractMapJoinOperator<MapJoinDesc>
- Returns:
- OperatorType.* or -1 if not overridden
Copyright © 2010 The Apache Software Foundation