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https://issues.apache.org/jira/browse/CASSANDRA-12866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15712653#comment-15712653
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Marcus Eriksson commented on CASSANDRA-12866:
---------------------------------------------

hmm yeah I guess so, if it happens only on 2.1

> dtest failure in 
> upgrade_tests.cql_tests.TestCQLNodes3RF3_Upgrade_current_2_1_x_To_indev_3_x.bug_5732_test
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-12866
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12866
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Sean McCarthy
>            Assignee: Sean McCarthy
>              Labels: dtest, test-failure
>         Attachments: node1.log
>
>
> example failure:
> http://cassci.datastax.com/job/cassandra-3.X_dtest_upgrade/17/testReport/upgrade_tests.cql_tests/TestCQLNodes3RF3_Upgrade_current_2_1_x_To_indev_3_x/bug_5732_test
> {code}
> Stacktrace
>   File "/usr/lib/python2.7/unittest/case.py", line 358, in run
>     self.tearDown()
>   File "/home/automaton/cassandra-dtest/upgrade_tests/upgrade_base.py", line 
> 214, in tearDown
>     super(UpgradeTester, self).tearDown()
>   File "/home/automaton/cassandra-dtest/dtest.py", line 581, in tearDown
>     raise AssertionError('Unexpected error in log, see stdout')
> {code}{code}
> Standard Output
> http://git-wip-us.apache.org/repos/asf/cassandra.git 
> git:0a1f1c81e641039ca9fd573d5217b6b6f2ad8fb8
> Unexpected error in node1 log, error: 
> ERROR [Reference-Reaper:1] 2016-10-30 15:47:36,749 Ref.java:199 - LEAK 
> DETECTED: a reference 
> (org.apache.cassandra.utils.concurrent.Ref$State@4f5697fa) to class 
> org.apache.cassandra.io.util.CompressedPoolingSegmentedFile$Cleanup@1100050528:/tmp/dtest-A15hEO/test/node1/data2/system/schema_columns-296e9c049bec3085827dc17d3df2122a/system-schema_columns-ka-1-Data.db
>  was not released before the reference was garbage collected
> Unexpected error in node1 log, error: 
> ERROR [Reference-Reaper:1] 2016-10-30 15:47:36,750 Ref.java:199 - LEAK 
> DETECTED: a reference 
> (org.apache.cassandra.utils.concurrent.Ref$State@45aefc8a) to class 
> org.apache.cassandra.utils.concurrent.WrappedSharedCloseable$1@11303515:[[OffHeapBitSet]]
>  was not released before the reference was garbage collected
> Unexpected error in node1 log, error: 
> ERROR [Reference-Reaper:1] 2016-10-30 15:47:36,750 Ref.java:199 - LEAK 
> DETECTED: a reference 
> (org.apache.cassandra.utils.concurrent.Ref$State@7b3ed4f3) to class 
> org.apache.cassandra.io.util.MmappedSegmentedFile$Cleanup@837204356:/tmp/dtest-A15hEO/test/node1/data2/system/schema_columns-296e9c049bec3085827dc17d3df2122a/system-schema_columns-ka-1-Index.db
>  was not released before the reference was garbage collected
> Unexpected error in node1 log, error: 
> ERROR [Reference-Reaper:1] 2016-10-30 15:47:36,752 Ref.java:199 - LEAK 
> DETECTED: a reference 
> (org.apache.cassandra.utils.concurrent.Ref$State@39e499e) to class 
> org.apache.cassandra.io.sstable.SSTableReader$DescriptorTypeTidy@1619232020:/tmp/dtest-A15hEO/test/node1/data2/system/schema_columns-296e9c049bec3085827dc17d3df2122a/system-schema_columns-ka-1
>  was not released before the reference was garbage collected
> Unexpected error in node1 log, error: 
> ERROR [Reference-Reaper:1] 2016-10-30 15:47:36,752 Ref.java:199 - LEAK 
> DETECTED: a reference 
> (org.apache.cassandra.utils.concurrent.Ref$State@6d974cbb) to class 
> org.apache.cassandra.utils.concurrent.WrappedSharedCloseable$1@1765405204:[Memory@[0..4),
>  Memory@[0..e)] was not released before the reference was garbage collected
> {code}



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