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From "Junegunn Choi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-3128) Remove extraneous operations during upsert with local immutable index
Date Mon, 08 Aug 2016 10:04:20 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-3128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15411613#comment-15411613
] 

Junegunn Choi commented on PHOENIX-3128:
----------------------------------------

Thanks, I can confirm that the deletes and duplicate writes are gone now. Still seeing the
same number of scans though for non-transactional case, is it expected?

> Remove extraneous operations during upsert with local immutable index
> ---------------------------------------------------------------------
>
>                 Key: PHOENIX-3128
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3128
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Junegunn Choi
>            Assignee: Junegunn Choi
>             Fix For: 4.8.0
>
>         Attachments: PHOENIX-3128.patch, PHOENIX-3128_v2.patch, PHOENIX-3128_v3.patch,
PHOENIX-3128_v4.patch, PHOENIX-3128_v5.patch, PHOENIX-3128_v6.patch, PHOENIX-3128_v7.patch,
PHOENIX-3128_v8.patch, PHOENIX-3128_wip.patch
>
>
> Upsert to a table with a local immutable index is supposed to be more efficient than
to a table with a local mutable index, but it's actually slower (in our environment by 30%)
due to extraneous operations involved.
> The problem is twofold:
> 1. Client unnecessarily prepares and sends index update.
> 2. Index cleanup is done regardless of the immutability of the table.



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