Erick Erickson created SOLR-12733:
-------------------------------------
Summary: 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
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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