org.apache.flink.runtime.rest.handler.legacy.metrics

Class MetricFetcher<T extends RestfulGateway>

java.lang.Object

org.apache.flink.runtime.rest.handler.legacy.metrics.MetricFetcher<T>

public class MetricFetcher<T extends RestfulGateway>
extends Object

The MetricFetcher can be used to fetch metrics from the JobManager and all registered TaskManagers.

Metrics will only be fetched when update() is called, provided that a sufficient time since the last call has passed.

Constructor Summary

Constructors

Constructor and Description
MetricFetcher(GatewayRetriever<T> retriever, MetricQueryServiceRetriever queryServiceRetriever, Executor executor, org.apache.flink.api.common.time.Time timeout)

Method Summary

Modifier and Type	Method and Description
MetricStore	getMetricStore() Returns the MetricStore containing all stored metrics.
void	update() This method can be used to signal this MetricFetcher that the metrics are still in use and should be updated.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetricFetcher

public MetricFetcher(GatewayRetriever<T> retriever,
                     MetricQueryServiceRetriever queryServiceRetriever,
                     Executor executor,
                     org.apache.flink.api.common.time.Time timeout)

Method Detail

getMetricStore

public MetricStore getMetricStore()

Returns the MetricStore containing all stored metrics.

Returns:

MetricStore containing all stored metrics;

update

public void update()

This method can be used to signal this MetricFetcher that the metrics are still in use and should be updated.