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https://issues.apache.org/jira/browse/HBASE-20017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16370976#comment-16370976
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Chia-Ping Tsai commented on HBASE-20017:
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{quote}I spent lot of time debugging our internal branch code thinking it was
doing something wrong on server side and finally convinced myself it is from
the client or the RPC layer.
{quote}
I must apologize for wasting your time.
> BufferedMutatorImpl submit the same mutation repeatedly
> -------------------------------------------------------
>
> Key: HBASE-20017
> URL: https://issues.apache.org/jira/browse/HBASE-20017
> Project: HBase
> Issue Type: Bug
> Components: Client
> Affects Versions: 1.4.0, 1.4.1, 1.4.2
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Blocker
> Fix For: 2.0.0, 1.5.0, 1.4.2
>
> Attachments: HBASE-20017.branch-1.4.v0.patch.patch,
> HBASE-20017.branch-1.v0.patch.patch, HBASE-20017.v0.patch.patch
>
>
> BMI pass a iter of inner buffer to AsyncProcess to take the undealt
> mutations, AsyncProcess call iter#next to get the mutation and then call
> iter#remove to delete the mutation from inner buffer. Hence, There's a good
> chance that the mutation is processed repeatedly in case there are a bunch
> of threads which are running the flush.
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