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https://issues.apache.org/jira/browse/HBASE-9949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13822996#comment-13822996
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Ted Yu commented on HBASE-9949:
-------------------------------
By default InjectionHandler#processEvent() is no-op. There is no impact on
performance.
The test uses specialized InjectionHandler:
{code}
+ StoreScannerCompactionRaceCondition ih =
+ new StoreScannerCompactionRaceCondition(s, 5);
+ InjectionHandler.set(ih);
{code}
> Fix the race condition between Compaction and StoreScanner.init
> ---------------------------------------------------------------
>
> Key: HBASE-9949
> URL: https://issues.apache.org/jira/browse/HBASE-9949
> Project: HBase
> Issue Type: Bug
> Components: Scanners
> Affects Versions: 0.89-fb
> Reporter: Manukranth Kolloju
> Assignee: Manukranth Kolloju
> Priority: Minor
> Fix For: 0.89-fb
>
> Attachments: 9949-trunk-v1.txt, 9949-trunk-v2.txt
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> The StoreScanner constructor has multiple stages and there can be a race
> betwwen an ongoing compaction and the StoreScanner constructor where we might
> get the list of scanners before a compaction and seek on those scanners after
> the compaction.
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