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From "Andrew Purtell (JIRA)" <>
Subject [jira] [Commented] (PHOENIX-5123) Avoid using MappedByteBuffers for server side GROUP BY
Date Tue, 05 Feb 2019 17:53:00 GMT


Andrew Purtell commented on PHOENIX-5123:

Is that a hack? Because it looks fine to me. Are you thinking the spill code more generally
should be reworked? That would be fine, but there is a strong case for eliminating use of
MBB given known resource leak issues, so why not do that first, then iterate on additional

> Avoid using MappedByteBuffers for server side GROUP BY
> ------------------------------------------------------
>                 Key: PHOENIX-5123
>                 URL:
>             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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