org.apache.hadoop.hive.ql.exec
Class FilterOperator

java.lang.Object
  org.apache.hadoop.hive.ql.exec.Operator<FilterDesc>
      org.apache.hadoop.hive.ql.exec.FilterOperator

All Implemented Interfaces:

Serializable, Cloneable, Node

Direct Known Subclasses:

VectorFilterOperator

public class FilterOperator
extends Operator<FilterDesc>
implements Serializable

Filter operator implementation.

See Also:

Serialized Form

Nested Class Summary

static class

FilterOperator.Counter Counter.

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.Operator

Operator.OperatorFunc, Operator.State

Field Summary

protected org.apache.hadoop.io.LongWritable	filtered_count
protected int	heartbeatInterval
protected org.apache.hadoop.io.LongWritable	passed_count

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

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

Constructor Summary

FilterOperator()

Method Summary

boolean	columnNamesRowResolvedCanBeObtained()
String	getName() Implements the getName function for the Node Interface.
static String	getOperatorName()
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.
void	processOp(Object row, int tag) Process the row.
boolean	supportAutomaticSortMergeJoin() Whether this operator supports automatic sort merge join.
boolean	supportSkewJoinOptimization()
boolean	supportUnionRemoveOptimization()

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

acceptLimitPushdown, allInitializedParentsAreClosed, areAllParentsInitialized, augmentPlan, cleanUpInputFileChanged, cleanUpInputFileChangedOp, clone, cloneOp, cloneRecursiveChildren, close, closeOp, defaultEndGroup, defaultStartGroup, dump, dump, endGroup, 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, opAllowedAfterMapJoin, opAllowedBeforeMapJoin, opAllowedBeforeSortMergeJoin, opAllowedConvertMapJoin, passExecContext, preorderMap, processGroup, 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, startGroup, toString, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

filtered_count

protected final transient org.apache.hadoop.io.LongWritable filtered_count

passed_count

protected final transient org.apache.hadoop.io.LongWritable passed_count

heartbeatInterval

protected transient int heartbeatInterval

Constructor Detail

FilterOperator

public FilterOperator()

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 Operator<FilterDesc>

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<FilterDesc>

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

getName

public String getName()

Description copied from class: Operator

Implements the getName function for the Node Interface.

Specified by:

getName in interface Node

Overrides:

getName in class Operator<FilterDesc>

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.

Specified by:

getType in class Operator<FilterDesc>

Returns:

OperatorType.*

supportSkewJoinOptimization

public boolean supportSkewJoinOptimization()

Overrides:

supportSkewJoinOptimization in class Operator<FilterDesc>

columnNamesRowResolvedCanBeObtained

public boolean columnNamesRowResolvedCanBeObtained()

Overrides:

columnNamesRowResolvedCanBeObtained in class Operator<FilterDesc>

supportAutomaticSortMergeJoin

public boolean supportAutomaticSortMergeJoin()

Description copied from class: Operator

Whether this operator supports automatic sort merge join. The stack is traversed, and this method is invoked for all the operators.

Overrides:

supportAutomaticSortMergeJoin in class Operator<FilterDesc>

Returns:

TRUE if yes, FALSE otherwise.

supportUnionRemoveOptimization

public boolean supportUnionRemoveOptimization()

Overrides:

supportUnionRemoveOptimization in class Operator<FilterDesc>