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https://issues.apache.org/jira/browse/HBASE-6704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446202#comment-13446202
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Ramkumar Vadali commented on HBASE-6704:
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https://reviews.facebook.net/D5085
> StoreScanner KV usage improvement
> ---------------------------------
>
> Key: HBASE-6704
> URL: https://issues.apache.org/jira/browse/HBASE-6704
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Environment: 89-fb
> Reporter: Ramkumar Vadali
> Priority: Trivial
>
> StoreScanner#next tries to ensure that the KVs are pulled from the heap
> in-order. The prevKV is used for this and is compared with the latest KV
> pulled from the heap. Since copyKV can be modified by ScanQueryMatcher,
> prevKV should track the KV pulled from the heap, and not copyKV. This is a
> one-line fix.
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