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https://issues.apache.org/jira/browse/CASSANDRA-3821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13213036#comment-13213036
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Yuki Morishita commented on CASSANDRA-3821:
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I also ran dtest and confirmed the issue was fixed. so +1.
> Counters in super columns don't preserve correct values after cluster restart
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-3821
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3821
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.0
> Environment: ubuntu, 'trunk' branch, used ccm to create a 3 node
> cluster with rf=3. A dtest was created to demonstrate.
> Reporter: Tyler Patterson
> Assignee: Sylvain Lebresne
> Fix For: 1.1.0
>
> Attachments: 3821.txt
>
>
> Set up a 3-node cluster with rf=3. Create a counter super column family and
> increment a bunch of subcolumns 100 times each, with cf=QUORUM. Then wait a
> few second, restart the cluster, and read the values back. They almost all
> come back different (and higher) then they are supposed to be.
> Here are some extra things I've noticed:
> - Reading back the values before the restart always produces correct results.
> - Doing a nodetool flush before killing the cluster greatly improves the
> results, though sometimes a value will still be incorrect. You might have to
> run the test several times to see an incorrect value after a flush.
> - This problem doesn't happen on C* 1.0.7, unless you don't sleep between
> doing the increments and killing the cluster. Then it sometimes happens to a
> lesser degree.
> A dtest has been added to demonstrate this issue. It is called
> "super_counter_test.py".
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