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https://issues.apache.org/jira/browse/FLINK-11888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16791288#comment-16791288
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Yu Li commented on FLINK-11888:
-------------------------------
[~sunjincheng121] has located the root cause of the port conflict issue in
FLINK-11892 and will contain the change required there in the document
refinement.
> Refine document of how to run end-to-end tests
> ----------------------------------------------
>
> Key: FLINK-11888
> URL: https://issues.apache.org/jira/browse/FLINK-11888
> Project: Flink
> Issue Type: Improvement
> Components: Documentation, Tests
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Major
>
> End-to-end tests are included in the scope of verifying a Flink release from
> [document|https://cwiki.apache.org/confluence/display/FLINK/Verifying+a+Flink+Release],
> and following the [read
> me|https://github.com/apache/flink/tree/master/flink-end-to-end-tests] on
> github to verify the nightly tests, I found several things need to be
> clarified, especially on a clean environment (never run nightly tests
> before), including:
> * We should clarify where to find the "<flink dir>" to run the tests against
> * We should clarify what preparation required before run the "Kerberized YARN
> on Docker test", if user choose to.
> Besides, I've observed some test failure caused by port occupation like below
> (probably due to resource release failure of completed tests) but it seems to
> be environment-related (checked against 4 macbook, 3 with stable failure and
> 1 success; checked against 2 linux vm, 1 with stable failure and 1 success).
> Will dig more and add to the document if any environment cleanup/set
> required, or open another JIRA if any improvement needed for the scripts.
> {noformat}
> java.net.BindException: Could not start actor system on any port in port
> range 6123
> {noformat}
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