org.apache.ignite.internal.metric

Class IoStatisticsQueryHelper

java.lang.Object

org.apache.ignite.internal.metric.IoStatisticsQueryHelper

public class IoStatisticsQueryHelper
extends Object

Helper for gathering IO statistics.

Constructor Summary

Constructors

Constructor and Description
IoStatisticsQueryHelper()

Method Summary

Modifier and Type	Method and Description
static IoStatisticsHolder	finishGatheringQueryStatistics() Finish gathering IO statistics for query.
static void	mergeQueryStatistics(IoStatisticsHolderQuery qryStat) Merge query statistics.
static void	startGatheringQueryStatistics(String qryId) Start gathering IO statistics for query.

Methods inherited from class java.lang.Object

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

Constructor Detail

IoStatisticsQueryHelper

public IoStatisticsQueryHelper()

Method Detail

startGatheringQueryStatistics

public static void startGatheringQueryStatistics(String qryId)

Start gathering IO statistics for query. Should be used together with finishGatheringQueryStatistics method.

Parameters:

qryId - Identifier of query.

mergeQueryStatistics

public static void mergeQueryStatistics(IoStatisticsHolderQuery qryStat)

Merge query statistics.

Parameters:

qryStat - Statistics which will be merged to current query statistics.

finishGatheringQueryStatistics

public static IoStatisticsHolder finishGatheringQueryStatistics()

Finish gathering IO statistics for query. Should be used together with startGatheringQueryStatistics method.

Returns:

Gathered statistics.