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https://issues.apache.org/jira/browse/PHOENIX-1318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14160850#comment-14160850
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Ted Yu commented on PHOENIX-1318:
---------------------------------

For append, HBase provides:
{code}
                newCell = 
coprocessorHost.postMutationBeforeWAL(RegionObserver.MutationType.APPEND,
{code}
Should another hook for PostWAL be added ?

> Tables with Put coprocessor cannot use HRegion.mutateRowsWithLocks()
> --------------------------------------------------------------------
>
>                 Key: PHOENIX-1318
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1318
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 3.1, 4.1
>            Reporter: James Taylor
>
> Ran into this originally with the SYSTEM.CATALOG table, and we hacked around 
> it by not putting the Put coprocessors on it (which means it can't have 
> mutable indexes). Ran into it again now with the SYSTEM.STATS table (FYI, 
> [~ramkrishna]). If you remember why, [~jesse_yates] would you mind adding a 
> comment here? We should get to the bottom of the issue and get a fix in if 
> possible (maybe requires an HBase change?).



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