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From "Jesse Yates (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-1457) Use high priority queue for metadata endpoint calls
Date Mon, 17 Nov 2014 19:21:34 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-1457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14215016#comment-14215016
] 

Jesse Yates commented on PHOENIX-1457:
--------------------------------------

Seems very feasible. The only thing I would worry about is that HBase uses the PayloadCarryingRpcController
the same way as everything else, so it can be used to get the RPC priority. Then you would
just need to create the logic to handle those requests in a separate queue, just like with
the index updates.

> Use high priority queue for metadata endpoint calls
> ---------------------------------------------------
>
>                 Key: PHOENIX-1457
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1457
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>
> If the RS hosting the system table gets swamped, then we'd be bottlenecked waiting for
the response back before running a query when we check if the metadata is in sync. We should
run endpoint coprocessor calls for MetaDataService at a high priority to avoid that.



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