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https://issues.apache.org/jira/browse/HBASE-18415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16169151#comment-16169151
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Chia-Ping Tsai commented on HBASE-18415:
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bq. Wildcard should not be used.
My dumb ide...Will fix it.

bq. ReuseNonceMasterCallable -> NonceReusingMasterCallable
copy that.

bq. Do we need to keep reference to NonceGenerator and the (group, nounce) pair 
at the same time ?
Do you mean *synchronization*? If so, we don't  need to keep them at the same 
time because the group/nonce is just random long value now.

> The local timeout may cause Admin to submit duplicate request
> -------------------------------------------------------------
>
>                 Key: HBASE-18415
>                 URL: https://issues.apache.org/jira/browse/HBASE-18415
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Chia-Ping Tsai
>            Assignee: Chia-Ping Tsai
>             Fix For: 2.0.0, 1.4.0, 1.3.2, 1.5.0, 1.2.7
>
>         Attachments: HBASE-18415.branch-1.ut.patch, 
> HBASE-18415.branch-1.v0.patch, HBASE-18415.branch-1.v1.patch, 
> HBASE-18415.branch-1.v2.patch
>
>
> After a timeout occurs on first request, client will retry the request with 
> distinct group/nonce. The second request may bring the TableXXXException back 
> if the first request have changed the table state.



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