[jira] [Assigned] (HDFS-17972) TestDFSClientRetries#testLeaseRenewAndDFSOutputStreamDeadLock hangs the surefire fork instead of failing

["Jose Luis López (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-17972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jose Luis López reassigned HDFS-17972:
--------------------------------------

    Assignee: Jose Luis López

> TestDFSClientRetries#testLeaseRenewAndDFSOutputStreamDeadLock hangs the surefire fork instead of failing
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-17972
>                 URL: https://issues.apache.org/jira/browse/HDFS-17972
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs, test
>            Reporter: Jose Luis López
>            Assignee: Jose Luis López
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.6.0, 3.5.2
>
>
> h2. Problem
> This problem has no production impact. It is limited to the test infraestructure. 
> {{testLeaseRenewAndDFSOutputStreamDeadLock}} blocks indefinitely instead of failing at its 120s deadline. It converts a bounded 120-second test failure into a build-killing hang that destroys the test report for an entire module and leaves no machine-readable trace. Yetus emits no per-class failure table for the affected run, so the contributor loses the result for every test in hadoop-hdfs, not just this one.
> Observed in precommit as {{testLeaseRenewAndDFSOutputStreamDeadLock}} and {{testLeaseRenewSocketTimeout}} failing together, always as timeouts, never as assertions, and both passing when re-run individually. Worst case seen: PR-8634 build 3 ran ~24 hours and died with exit code 137.
> This problem hangs the test process for very long time instead of producing a failure in the timeout period of the test.
> The impact is that all tests from the hdfs module fail because of the hang, instead of failing just one test. The fix would turn every future occurrence from failing all tests back into a single failed test.
> h2. Root cause
> Two defects combine:
>  # The timeout cannot interrupt a blocked test.
>  # The test leaks a global fault injector.
> This conditions occur in heavy load of the testing infraestructure.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org