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From "Vincent Poon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-3983) Index rebuild scans should not be using the ServerRpcControllerFactory
Date Thu, 29 Jun 2017 18:26:01 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-3983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16068747#comment-16068747
] 

Vincent Poon commented on PHOENIX-3983:
---------------------------------------

The patch fixes the data table scans by specifically removing it from the controller chain
which sets the index priority.  But should we try doing the opposite?  That is, instead of
making a special case for non-index operations, we should make a special case for index operations.

I think the current IndexRpcController is too broad in that it stamps all non-system table
operations with index priority.  This could have unintended consequences for users of HTable
who have enabled the Phoenix ServerRpcControllerFactory.

For instance, the canary and hbase shell use HTable as well, and they also read from the server-side
hbase-site.xml.  Those requests would now get handled by index handlers.  Furthermore the
operator would now have to know that they have to adjust the IndexRPC handler pool size if
they want to increase the pool for server-server rpcs.

Having said that, I don't see an immediate easy solution :).  The easiest would be if in IndexRpcController
we could determine from a TableName whether it is an index, but we would have to pass in a
special TableName to the HTable in the IndexCommitter and then do an instanceof inside IndexRpcController.

> Index rebuild scans should not be using the ServerRpcControllerFactory
> ----------------------------------------------------------------------
>
>                 Key: PHOENIX-3983
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3983
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Samarth Jain
>            Assignee: Samarth Jain
>         Attachments: PHOENIX-3983.patch
>
>




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