public class MapOperator extends Operator<MapWork> implements java.io.Serializable, java.lang.Cloneable
Modifier and Type | Class and Description |
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static class |
MapOperator.Counter
Counter.
|
Operator.OperatorFunc, Operator.ProgressCounter, Operator.State
alias, beginTime, childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, counterNames, counterNameToEnum, counters, done, fatalErrorCntr, groupKeyObject, id, inputObjInspectors, inputRows, isLogInfoEnabled, LOG, numInputRowsCntr, numOutputRowsCntr, operatorId, out, outputObjInspector, outputRows, parentOperators, reporter, state, statsMap, timeTakenCntr, totalTime
Constructor and Description |
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MapOperator() |
Modifier and Type | Method and Description |
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void |
cleanUpInputFileChangedOp() |
void |
closeOp(boolean abort)
close extra child operators that are initialized but are not executed.
|
java.lang.String |
getName()
Implements the getName function for the Node Interface.
|
static java.lang.String |
getOperatorName() |
OperatorType |
getType()
Return the type of the specific operator among the
types in OperatorType.
|
void |
initializeAsRoot(Configuration hconf,
MapWork mapWork)
Initializes this map op as the root of the tree.
|
void |
initializeOp(Configuration hconf)
Operator specific initialization.
|
static Writable[] |
populateVirtualColumnValues(ExecMapperContext ctx,
java.util.List<VirtualColumn> vcs,
Writable[] vcValues,
Deserializer deserializer) |
void |
process(Writable value) |
void |
processOp(java.lang.Object row,
int tag)
Process the row.
|
void |
setChildren(Configuration hconf) |
acceptLimitPushdown, allInitializedParentsAreClosed, areAllParentsInitialized, assignCounterNameToEnum, augmentPlan, checkFatalErrors, cleanUpInputFileChanged, clone, close, columnNamesRowResolvedCanBeObtained, dump, dump, endGroup, fatalErrorMessage, 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, opAllowedAfterMapJoin, opAllowedBeforeMapJoin, 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, startGroup, supportAutomaticSortMergeJoin, supportSkewJoinOptimization, supportUnionRemoveOptimization, toString, toString, updateCounters
public void initializeAsRoot(Configuration hconf, MapWork mapWork) throws HiveException
hconf
- mrwork
- HiveException
public void setChildren(Configuration hconf) throws HiveException
HiveException
public void initializeOp(Configuration hconf) throws HiveException
Operator
initializeOp
in class Operator<MapWork>
HiveException
public void closeOp(boolean abort) throws HiveException
closeOp
in class Operator<MapWork>
HiveException
public void cleanUpInputFileChangedOp() throws HiveException
cleanUpInputFileChangedOp
in class Operator<MapWork>
HiveException
public void process(Writable value) throws HiveException
HiveException
public static Writable[] populateVirtualColumnValues(ExecMapperContext ctx, java.util.List<VirtualColumn> vcs, Writable[] vcValues, Deserializer deserializer)
public void processOp(java.lang.Object row, int tag) throws HiveException
Operator
processOp
in class Operator<MapWork>
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.HiveException
public java.lang.String getName()
Operator
public static java.lang.String getOperatorName()
public OperatorType getType()
Operator
Copyright © 2012 The Apache Software Foundation