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https://issues.apache.org/jira/browse/YARN-10041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17000614#comment-17000614
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Vinayakumar B commented on YARN-10041:
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thanks [~bzhaoopenstack] for patch.
I had checked the PR and given one comment. Please check.
> Should not use AbstractPath to create unix domain socket
> --------------------------------------------------------
>
> Key: YARN-10041
> URL: https://issues.apache.org/jira/browse/YARN-10041
> Project: Hadoop YARN
> Issue Type: Bug
> Components: client
> Environment: X86/ARM
> OS: ubuntu 1804
> java: java8
> Reporter: zhao bo
> Priority: Major
>
> This issue hits by a very coincidental scene. That 's happend when we test on
> ARM.
> The test case is:
> org.apache.hadoop.yarn.csi.client.TestCsiClient.testIdentityService
>
> The step is:
> If we make the hadoop source code dir to a very deep dir path, this case
> would be pass at the first time running, but always fail in the following
> tries.
> The official jenkins doesn't cover this, because it runs on Docker container
> and just run test 1 time. So it looks like alway pass.
>
> The key point is the UNIX domain socket path exceed the limit of
> UNIX_PATH_MAX(108). Please see [1]
>
> This issue is very difficult to locate, as it will always return binding
> failed when we exec the test.
>
> Also I saw the hadoop code in trunk branch, the code use the AbsolutePath to
> create the UNIX DOMAIN SOCKET file. The source code is [2]. So that can not
> forbid to hit this issue. That's good to provide a second way to set the
> socket path to '/tmp' or any place when exec this test.
> [1]
> [https://serverfault.com/questions/641347/check-if-a-path-exceeds-maximum-for-unix-domain-socket]
> [2]
> [https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-csi/src/test/java/org/apache/hadoop/yarn/csi/client/TestCsiClient.java#L48]
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