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From "Anton Vinogradov (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (IGNITE-6923) Cache metrics are updated in timeout-worker potentially delaying critical code execution due to current implementation issues.
Date Wed, 06 Dec 2017 11:06:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-6923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anton Vinogradov reassigned IGNITE-6923:
----------------------------------------

    Assignee: Aleksey Plekhanov

> Cache metrics are updated in timeout-worker potentially delaying critical code execution
due to current implementation issues.
> ------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-6923
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6923
>             Project: Ignite
>          Issue Type: Improvement
>    Affects Versions: 2.3
>            Reporter: Alexei Scherbakov
>            Assignee: Aleksey Plekhanov
>              Labels: iep-6
>             Fix For: 2.4
>
>
> Some metrics are using cache iteration for calculation. If number of caches rather large
this can be slow.
> Similar code is running in discovery thread.
> See stack trace for example.
> {noformat}
> "grid-timeout-worker-#39%DPL_GRID%DplGridNodeName%" #152 prio=5 os_prio=0 tid=0x00007f1009a03000
nid=0x5caa runnable [0x00007f0f059d9000] 
>    java.lang.Thread.State: RUNNABLE 
>         at java.util.HashMap.containsKey(HashMap.java:595) 
>         at java.util.HashSet.contains(HashSet.java:203) 
>         at java.util.Collections$UnmodifiableCollection.contains(Collections.java:1032)

>         at org.apache.ignite.internal.processors.cache.IgniteCacheOffheapManagerImpl$3.apply(IgniteCacheOffheapManagerImpl.java:339)
>         at org.apache.ignite.internal.processors.cache.IgniteCacheOffheapManagerImpl$3.apply(IgniteCacheOffheapManagerImpl.java:337)
>         at org.apache.ignite.internal.util.lang.gridfunc.TransformFilteringIterator.hasNext:@TransformFilteringIterator.java:90)
>         at org.apache.ignite.internal.util.lang.GridIteratorAdapter.hasNext(GridIteratorAdapter.java:45)

>         at org.apache.ignite.internal.processors.cache.IgniteCacheOffheapManagerImpl.cacheEntriesCount(IgniteCacheOffheapManagerImpl.java:293)
>         at org.apache.ignite.internal.processors.cache.CacheMetricsImpl.getOffHeapPrimaryEntriesCount(CacheMetricsImpl.java:240)
>         at org.apache.ignite.internal.processors.cache.CacheMetricsSnapshot.<init>(CacheMetricsSnapshot.java:271)

>         at org.apache.ignite.internal.processors.cache.GridCacheAdapter.localMetrics(GridCacheAdapter.java:3217)

>         at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$7.cacheMetrics(GridDiscoveryManager.java:1151)
>         at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$7.nonHeapMemoryUsed(GridDiscoveryManager.java:1121)
>         at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$7.metrics(GridDiscoveryManager.java:1087)

>         at org.apache.ignite.spi.discovery.tcp.internal.TcpDiscoveryNode.metrics(TcpDiscoveryNode.java:269)

>         at org.apache.ignite.internal.IgniteKernal$3.run(IgniteKernal.java:1175) 
>         at org.apache.ignite.internal.processors.timeout.GridTimeoutProcessor$CancelableTask.onTimeout(GridTimeoutProcessor.java:256)
>         - locked <0x00007f115f5bf890> (a org.apache.ignite.internal.processors.timeout.GridTimeoutProcessor$CancelableTask)
>         at org.apache.ignite.internal.processors.timeout.GridTimeoutProcessor$TimeoutWorker.body(GridTimeoutProcessor.java:158)
>         at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)

>         at java.lang.Thread.run(Thread.java:748)
> {noformat}



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