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

Interface StatsSource

All Known Implementing Classes:

CachingStatsSource, EmptyStatsSource, MapBackedStatsSource

@InterfaceAudience.Private
public interface StatsSource

Method Summary

Modifier and Type	Method and Description
boolean	canProvideStatsFor(Class<?> clazz)
void	load(List<PersistedRuntimeStats> list)
Optional<OperatorStats>	lookup(OpTreeSignature treeSig)
Optional<OperatorStats>	lookup(RelTreeSignature treeSig)

Method Detail

canProvideStatsFor

boolean canProvideStatsFor(Class<?> clazz)

lookup

Optional<OperatorStats> lookup(OpTreeSignature treeSig)

lookup

Optional<OperatorStats> lookup(RelTreeSignature treeSig)

load

void load(List<PersistedRuntimeStats> list)