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https://issues.apache.org/jira/browse/HBASE-6907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540583#comment-13540583
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Matt Corgan commented on HBASE-6907:
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We decided to call it mvccVersion in the Cell interface and deprecate the
memstoreTS name.
> KeyValue equals and compareTo methods should match
> --------------------------------------------------
>
> Key: HBASE-6907
> URL: https://issues.apache.org/jira/browse/HBASE-6907
> Project: HBase
> Issue Type: Bug
> Components: util
> Reporter: Matt Corgan
> Priority: Critical
> Fix For: 0.96.0
>
>
> KeyValue.KVComparator includes the memstoreTS when comparing, however the
> KeyValue.equals() method ignores the memstoreTS.
> The Comparator interface has always specified that comparator return 0 when
> equals would return true and vice versa. Obeying that rule has been sort of
> optional in the past, but Java 7 introduces a new default collection sorting
> algorithm called Tim Sort which relies on that behavior.
> http://bugs.sun.com/view_bug.do?bug_id=6804124
> Possible problem spots:
> * there's a Collections.sort(KeyValues) in
> RedundantKVGenerator.generateTestKeyValues(..)
> * TestColumnSeeking compares two collections of KeyValues using the
> containsAll method. It is intentionally ignoring memstoreTS, so will need an
> alternative method for comparing the two collections.
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