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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-19138) Rare failure in TestLruBlockCache
Date Tue, 31 Oct 2017 18:28:00 GMT
Andrew Purtell created HBASE-19138:
--------------------------------------

             Summary: Rare failure in TestLruBlockCache
                 Key: HBASE-19138
                 URL: https://issues.apache.org/jira/browse/HBASE-19138
             Project: HBase
          Issue Type: Bug
          Components: test
            Reporter: Andrew Purtell
            Assignee: Andrew Purtell
            Priority: Trivial
             Fix For: 2.0.0, 3.0.0, 1.4.0, 1.5.0


[ERROR] testCacheEvictionThreadSafe(org.apache.hadoop.hbase.io.hfile.TestLruBlockCache) Time
elapsed: 0.028 s <<< FAILURE!
java.lang.AssertionError: expected:<0> but was:<1>
at org.apache.hadoop.hbase.io.hfile.TestLruBlockCache.testCacheEvictionThreadSafe(TestLruBlockCache.java:86)

Fix for this I think is waiting for the block count to drop to zero after awaiting shutdown
of the executor pool. There's a rare race here. Tests look good using a Waiter predicate so
far, but I haven't finished all 100 iterations yet. 



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