[jira] [Updated] (SOLR-12733) SolrMetricReporterTest failure

["Erick Erickson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-12733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Erick Erickson updated SOLR-12733:
----------------------------------
    Summary: SolrMetricReporterTest failure  (was: SolrMetricReporter failure)

> SolrMetricReporterTest failure
> ------------------------------
>
>                 Key: SOLR-12733
>                 URL: https://issues.apache.org/jira/browse/SOLR-12733
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: logging
>            Reporter: Erick Erickson
>            Assignee: Erick Erickson
>            Priority: Major
>
> Since the change to async logger, this test fails 100% of the time for me locally. [~steve_rowe] confirmed that it fails for him too so it's not something weird in my environment.
> Why there are no reports from Jenkins of this failure is a mystery.
> The _test_ succeeds, but there is a thread leak and the stack trace points to "lmax.disruptor" which is certainly a part of the async logging.
> And why, if this is something generic, it doesn't fail many many tests is another mystery so I suspect it's something specific to the test, perhaps having to do with mocking the metric reporter, but that's a wild shot in the dark.
> My working hypothesis is that "something isn't being closed/shutdown correctly", but that's...a little vague.
> {code}
> Sep 04, 2018 9:38:00 AM com.carrotsearch.randomizedtesting.ThreadLeakControl checkThreadLeaks
> WARNING: Will linger awaiting termination of 1 leaked thread(s).
> Sep 04, 2018 9:38:20 AM com.carrotsearch.randomizedtesting.ThreadLeakControl checkThreadLeaks
> SEVERE: 1 thread leaked from SUITE scope at org.apache.solr.metrics.SolrMetricReporterTest: 
>    1) Thread[id=14, name=Log4j2-TF-1-AsyncLoggerConfig--1, state=TIMED_WAITING, group=TGRP-SolrMetricReporterTest]
>         at sun.misc.Unsafe.park(Native Method)
>         at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
>         at com.lmax.disruptor.TimeoutBlockingWaitStrategy.waitFor(TimeoutBlockingWaitStrategy.java:38)
>         at com.lmax.disruptor.ProcessingSequenceBarrier.waitFor(ProcessingSequenceBarrier.java:56)
>         at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:128)
>         at java.lang.Thread.run(Thread.java:748)
> {code}



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