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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-5123) Avoid using MappedByteBuffers for server side GROUP BY
Date Tue, 05 Feb 2019 22:46:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-5123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16761287#comment-16761287
] 

Andrew Purtell commented on PHOENIX-5123:
-----------------------------------------

I see, well RAF supports it, but if Phoenix is treating it as paged, then asserting that length
<= page size would be appropriate, sorry for the noise

> 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
>
>
> 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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