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https://issues.apache.org/jira/browse/PHOENIX-4130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369020#comment-16369020
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Rajeshbabu Chintaguntla commented on PHOENIX-4130:
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[~vincentpoon] 
This is missing in 5.x-HBase-2.0 branch. Can you able to port and commit this 
to the branch as well? otherwise can take up and port it. Thanks

> Avoid server retries for mutable indexes
> ----------------------------------------
>
>                 Key: PHOENIX-4130
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4130
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: Lars Hofhansl
>            Assignee: Vincent Poon
>            Priority: Major
>             Fix For: 4.14.0
>
>         Attachments: PHOENIX-4130.addendum.master.patch, 
> PHOENIX-4130.v1.master.patch, PHOENIX-4130.v10.master.patch, 
> PHOENIX-4130.v2.master.patch, PHOENIX-4130.v3.master.patch, 
> PHOENIX-4130.v4.master.patch, PHOENIX-4130.v5.master.patch, 
> PHOENIX-4130.v6.master.patch, PHOENIX-4130.v7.master.patch, 
> PHOENIX-4130.v8.master.patch, PHOENIX-4130.v9.master.patch
>
>
> Had some discussions with [~jamestaylor], [~samarthjain], and [~vincentpoon], 
> during which I suggested that we can possibly eliminate retry loops happening 
> at the server that cause the handler threads to be stuck potentially for 
> quite a while (at least multiple seconds to ride over common scenarios like 
> splits).
> Instead we can do the retries at the Phoenix client that.
> So:
> # The index updates are not retried on the server. (retries = 0)
> # A failed index update would set the failed index timestamp but leave the 
> index enabled.
> # Now the handler thread is done, it throws an appropriate exception back to 
> the client.
> # The Phoenix client can now retry. When those retries fail the index is 
> disabled (if the policy dictates that) and throw the exception back to its 
> caller.
> So no more waiting is needed on the server, handler threads are freed 
> immediately.



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