org.apache.ignite.internal.processors.query.stat

Class StatisticsGatherer

java.lang.Object

org.apache.ignite.internal.processors.query.stat.StatisticsGatherer

public class StatisticsGatherer
extends Object

Implementation of statistic collector.

Constructor Summary

Constructors

Constructor and Description
StatisticsGatherer(IgniteStatisticsRepository repo, IgniteThreadPoolExecutor gatherPool, Function<Class<?>,IgniteLogger> logSupplier) Constructor.

Method Summary

Modifier and Type	Method and Description
LocalStatisticsGatheringContext	aggregateStatisticsAsync(StatisticsKey key, Supplier<ObjectStatisticsImpl> aggregate) Schedule supplied statistics aggregation and return task context.
void	cancelAllTasks() Cancel all currently running statistics gathering tasks.
LocalStatisticsGatheringContext	gatheringInProgress(StatisticsKey key) Get gathering context by key.
LocalStatisticsGatheringContext	gatherLocalObjectsStatisticsAsync(GridH2Table tbl, StatisticsObjectConfiguration cfg, Map<String,StatisticsColumnConfiguration> colCfgs, Set<Integer> parts) Collect statistic per partition for specified object.
void	start() Start gathering.
void	stop() Stop gathering.

Methods inherited from class java.lang.Object

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

Constructor Detail

StatisticsGatherer

public StatisticsGatherer(IgniteStatisticsRepository repo,
                          IgniteThreadPoolExecutor gatherPool,
                          Function<Class<?>,IgniteLogger> logSupplier)

Constructor.

Parameters:

repo - IgniteStatisticsRepository.

gatherPool - Thread pool to gather statistics in.

logSupplier - Log supplier function.

Method Detail

aggregateStatisticsAsync

public LocalStatisticsGatheringContext aggregateStatisticsAsync(StatisticsKey key,
                                                                Supplier<ObjectStatisticsImpl> aggregate)

Schedule supplied statistics aggregation and return task context.

Parameters:

key - Statistics key to aggregate statistics by.

aggregate - Statistics to aggregate supplier.

Returns:

Task context.

gatherLocalObjectsStatisticsAsync

public LocalStatisticsGatheringContext gatherLocalObjectsStatisticsAsync(GridH2Table tbl,
                                                                         StatisticsObjectConfiguration cfg,
                                                                         Map<String,StatisticsColumnConfiguration> colCfgs,
                                                                         Set<Integer> parts)

Collect statistic per partition for specified object.

Parameters:

tbl - Table to gather statistics by.

cfg - Statistics configuration.

colCfgs - Column to gathering configuration.

parts - Partitions to gather.

Returns:

Operation context.

gatheringInProgress

public LocalStatisticsGatheringContext gatheringInProgress(StatisticsKey key)

Get gathering context by key.

Parameters:

key - Statistics key.

Returns:

Gathering in progress or null if there are no active gathering by specified key.

start

public void start()

Start gathering.

stop

public void stop()

Stop gathering.

cancelAllTasks

public void cancelAllTasks()

Cancel all currently running statistics gathering tasks.