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https://issues.apache.org/jira/browse/HBASE-20036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16376396#comment-16376396
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ramkrishna.s.vasudevan commented on HBASE-20036:
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Thanks for the heads up BTW.
> TestAvoidCellReferencesIntoShippedBlocks timed out
> --------------------------------------------------
>
> Key: HBASE-20036
> URL: https://issues.apache.org/jira/browse/HBASE-20036
> Project: HBase
> Issue Type: Sub-task
> Reporter: stack
> Priority: Major
>
> Looks like it is stuck can't flush; bad math?
> See the dashboard where it hung here:
> https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/2428/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.client.TestAvoidCellReferencesIntoShippedBlocks-output.txt
> ... the provocation could be this?
> 2018-02-21 04:18:44,973 DEBUG [Thread-178] bucket.BucketCache(629): This
> block eefaa9a7b10e437b9fc2b55a67d63191_4356 is still referred by 1 readers.
> Can not be freed now. Hence will mark this for evicting at a later point
> Exception in thread "Thread-178" java.lang.AssertionError: old blocks should
> still be found expected:<6> but was:<5>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:834)
> at org.junit.Assert.assertEquals(Assert.java:645)
> ... Then we get stuck doing this:
> 2018-02-21 04:23:34,661 DEBUG [master/asf903:0.Chore.1] master.HMaster(1524):
> Skipping normalization for table: testHBase16372InCompactionWritePath, as
> it's either system table or doesn't have auto normalization turned on
> 2018-02-21 04:23:35,695 INFO [regionserver/asf903:0.Chore.1]
> regionserver.HRegionServer$PeriodicMemStoreFlusher(1752):
> MemstoreFlusherChore requesting flush of hbase:meta,,1.1588230740 because
> info has an old edit so flush to free WALs after random delay 286820ms
> 2018-02-21 04:23:36,009 DEBUG [ReadOnlyZKClient-localhost:61855@0x227ea3ed]
> zookeeper.ReadOnlyZKClient(316): 0x227ea3ed to localhost:61855 inactive for
> 60000ms; closing (Will reconnect when new requests)
> It also failed a recent nightly for same reason:
> https://builds.apache.org/job/HBase%20Nightly/job/branch-2/355/
> Any chance you'd take a look [~ram_krish]? You best at this stuff?
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