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https://issues.apache.org/jira/browse/FLINK-10715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16672846#comment-16672846
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ASF GitHub Bot commented on FLINK-10715:
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tillrohrmann commented on issue #6996: [FLINK-10715] Change reporter log level
URL: https://github.com/apache/flink/pull/6996#issuecomment-435330002
Why did you close this PR @igalshilman?
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> E2e tests fail with ConcurrentModificationException in MetricRegistryImpl
> -------------------------------------------------------------------------
>
> Key: FLINK-10715
> URL: https://issues.apache.org/jira/browse/FLINK-10715
> Project: Flink
> Issue Type: Bug
> Components: E2E Tests, Metrics
> Affects Versions: 1.7.0
> Reporter: Dawid Wysakowicz
> Assignee: Igal Shilman
> Priority: Blocker
> Labels: pull-request-available
>
> Couple of e2e tests that rely on metrics fail with exception:
> {code}
> 2018-10-29 11:40:32,781 WARN
> org.apache.flink.runtime.metrics.MetricRegistryImpl - Error while
> reporting metrics
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
> at java.util.HashMap$EntryIterator.next(HashMap.java:1471)
> at java.util.HashMap$EntryIterator.next(HashMap.java:1469)
> at
> org.apache.flink.metrics.slf4j.Slf4jReporter.report(Slf4jReporter.java:101)
> at
> org.apache.flink.runtime.metrics.MetricRegistryImpl$ReporterTask.run(MetricRegistryImpl.java:427)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> Tests that failed:
> * 'Resuming Externalized Checkpoint (file, sync, no parallelism change)
> end-to-end test
> * 'State TTL Heap backend end-to-end test'
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