[jira] [Comment Edited] (PHOENIX-6671) Avoid ShortCirtuation Coprocessor Connection with HBase 2.x

["Kadir OZDEMIR (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PHOENIX-6671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17509130#comment-17509130 ] 

Kadir OZDEMIR edited comment on PHOENIX-6671 at 3/19/22, 12:42 AM:
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[~larsh],  the patch looks good to me. Would you please generate a PR just to trigger the pre-checkin tests (just to be sure this does not lead to some IT failures)? I think submitting a patch does not trigger these tests any more. 


was (Author: kozdemir):
[~larsh],  the patch looks good to me. Would you please you generate a PR just to trigger the pre-checkin tests (just to be sure this does not lead to some IT failures)? I think submitting a patch does not trigger these tests any more. 

> Avoid ShortCirtuation Coprocessor Connection with HBase 2.x
> -----------------------------------------------------------
>
>                 Key: PHOENIX-6671
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-6671
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Priority: Major
>         Attachments: 6671-5.1.txt
>
>
> See PHOENIX-6501, PHOENIX-6458, and HBASE-26812.
> HBase's ShortCircuit Connection are fundamentally broken in HBase 2. We might be able to fix it there, but with all the work the RPC handlers perform now (closing scanning, resolving current user, etc), I doubt we'll get that 100% right. HBase 3 has removed this functionality.
> Even with HBase 2, which does not have the async protobuf code, I could hardly see any performance improvement from circumventing the RPC stack in case the target of a Get or Scan is local. Even in the most ideal conditions where everything is local, there was improvement outside of noise.
> I suggest we do not use ShortCircuited Connections in Phoenix 5+.



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