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https://issues.apache.org/jira/browse/FLINK-4145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15360678#comment-15360678
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ASF GitHub Bot commented on FLINK-4145:
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Github user zentol commented on the issue:
https://github.com/apache/flink/pull/2193
the default port range is 9010-9025, that's 15 not 5 ports.
> JmxReporterTest fails due to port conflicts
> -------------------------------------------
>
> Key: FLINK-4145
> URL: https://issues.apache.org/jira/browse/FLINK-4145
> Project: Flink
> Issue Type: Bug
> Components: Local Runtime
> Reporter: Ufuk Celebi
> Assignee: Ufuk Celebi
> Labels: test-stability
> Fix For: 1.1.0
>
>
> I saw multiple failures of the {{JmxReporterTest}} most likely due to a port
> conflicts. The test relies on the default JMX reporter port range, which
> spans 5 ports. Running on Travis with multiple concurrent builds and bad
> timings, this can lead to port conflicts.
> Some example failed runs:
> https://s3.amazonaws.com/archive.travis-ci.org/jobs/141999066/log.txt (one
> out of 5 jobs failed)
> https://travis-ci.org/uce/flink/builds/141917901 (all 5 jobs failed)
> I propose to take the fork number into account (like the forkable Flink
> testing cluster) and configure a larger port range.
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