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https://issues.apache.org/jira/browse/HBASE-10714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jimmy Xiang updated HBASE-10714:
--------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Integrated patch v2 to trunk.
> SyncFuture hangs when sequence is 0
> -----------------------------------
>
> Key: HBASE-10714
> URL: https://issues.apache.org/jira/browse/HBASE-10714
> Project: HBase
> Issue Type: Bug
> Components: wal
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Fix For: 0.99.0
>
> Attachments: hbase-10714.patch, hbase-10714_v2.patch
>
>
> In SyncFuture, NOT_DONE = 0. The initial value of the ringBuffer is -1. So
> ringBuffer.next() gives 0 for the first call. If we create a SyncFuture with
> sequence = 0, even when we set it's done (ie. doneSequence = 0), it is still
> not done since doneSequence == NOT_DONE == 0. Can we set NOT_DONE to -1, and
> the initial doneSequence to -2?
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