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)
void	load(List<PersistedRuntimeStats> statMap)
Optional<OperatorStats>	lookup(OpTreeSignature treeSig)
Optional<OperatorStats>	lookup(RelTreeSignature treeSig)

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

lookup

public Optional<OperatorStats> lookup(OpTreeSignature treeSig)

Specified by:

lookup in interface StatsSource

lookup

public Optional<OperatorStats> lookup(RelTreeSignature treeSig)

Specified by:

lookup in interface StatsSource

canProvideStatsFor

public boolean canProvideStatsFor(Class<?> clazz)

Specified by:

canProvideStatsFor in interface StatsSource

load

public void load(List<PersistedRuntimeStats> statMap)

Specified by:

load in interface StatsSource