org.apache.hadoop.hive.ql.plan.mapper

Class CachingStatsSource

java.lang.Object

org.apache.hadoop.hive.ql.plan.mapper.CachingStatsSource

All Implemented Interfaces:

StatsSource

public class CachingStatsSource
extends Object
implements StatsSource

Constructor Summary

Constructors

Constructor and Description
CachingStatsSource(int cacheSize)

Method Summary

Modifier and Type	Method and Description
boolean	canProvideStatsFor(Class<?> clazz)
Optional<OperatorStats>	lookup(OpTreeSignature treeSig)
void	put(OpTreeSignature sig, OperatorStats opStat)
void	putAll(Map<OpTreeSignature,OperatorStats> map)

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingStatsSource

public CachingStatsSource(int cacheSize)

Method Detail

put

public void put(OpTreeSignature sig,
                OperatorStats opStat)

lookup

public Optional<OperatorStats> lookup(OpTreeSignature treeSig)

Specified by:

lookup in interface StatsSource

canProvideStatsFor

public boolean canProvideStatsFor(Class<?> clazz)

Specified by:

canProvideStatsFor in interface StatsSource

putAll

public void putAll(Map<OpTreeSignature,OperatorStats> map)

Specified by:

putAll in interface StatsSource