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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-5123) Avoid using MappedByteBuffers for server side GROUP BY
Date Wed, 06 Feb 2019 19:19:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-5123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16762031#comment-16762031
] 

Lars Hofhansl commented on PHOENIX-5123:
----------------------------------------

Going to commit -v1 (with SIZEOF_INT) in a few.

> Avoid using MappedByteBuffers for server side GROUP BY
> ------------------------------------------------------
>
>                 Key: PHOENIX-5123
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5123
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Priority: Major
>         Attachments: 5123-4.x-W.I.P.txt, 5123-4.x-v1.txt
>
>
> Like PHOENIX-5120 but for GROUP BY.
> Solution is a bit more tricky, since outline for sorting the access here is truly random.
> [~apurtell] suggests to perhaps just use a RandomAccessFile for this.
> (I'm not sure that uses under the hood, though)



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