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https://issues.apache.org/jira/browse/SOLR-12733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16604538#comment-16604538
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Erick Erickson commented on SOLR-12733:
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Oops, forgot the "Test" at the end. Well, _*I*_ knew what I meant ;)
Thanks for digging into this, I got wrapped up yesterday and didn't get back to
it. I'd wondered about the superclass but hadn't gotten to test it yet.
Anyway, I'll fix up both tests and, I hope, check them in today.
Thanks again!
Erick
> SolrMetricReporter 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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