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https://issues.apache.org/jira/browse/HBASE-9874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-9874:
----------------------------------

    Attachment: AccessController.postMutationBeforeWAL.txt

The naive merge is fine [~anoop.hbase] but let's put the postMutationBeforeWAL 
hook in on this JIRA.

Attaching the postMutationBeforeWAL code from the AccessController as an 
example user of this hook, in case someone wants to take a look here. 

Unfortunately I don't see how today each CP in a chain doing some rewriting of 
its tag data can avoid allocating a new KV and copying over all other tags - 
not until we have something like HBASE-9794. We are going to be duplicating the 
work of the naive merge anyhow (and the naive merge is fine in the general 
case.)

> Append and Increment operation drops Tags
> -----------------------------------------
>
>                 Key: HBASE-9874
>                 URL: https://issues.apache.org/jira/browse/HBASE-9874
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.98.0
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 0.98.0
>
>         Attachments: AccessController.postMutationBeforeWAL.txt, 
> HBASE-9874.patch, HBASE-9874_V2.patch
>
>
> We should consider tags in the existing cells as well as tags coming in the 
> cells within Increment/Append



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