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  1. Solr
  2. SOLR-12733

SolrMetricReporterTest failure



    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 7.5, 8.0
    • Component/s: logging
    • Labels:


      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.

      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)


        1. SOLR-12733.patch
          2 kB
          Erick Erickson



            • Assignee:
              erickerickson Erick Erickson
              erickerickson Erick Erickson
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