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From "James Taylor (JIRA)" <>
Subject [jira] [Updated] (PHOENIX-2556) Subqueries are not freeing hash cache
Date Mon, 04 Jan 2016 01:21:39 GMT


James Taylor updated PHOENIX-2556:
    Attachment: PHOENIX-2556_wip.patch

[~maryannxue] - would you have some spare cycles to look at this? I've attached a patch that
repros the issue through an assertion that all server-side memory was freed. It seems that
when subqueries are used, the hash cache isn't removed on the server side. The ServerCache
dependencies member variable in HashJoinPlan don't seem to be rolled up, so this causes a
kind of memory leak for the server-side cache.

> Subqueries are not freeing hash cache
> -------------------------------------
>                 Key: PHOENIX-2556
>                 URL:
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: Maryann Xue
>         Attachments: PHOENIX-2556_wip.patch
> Subqueries are only freeing some of the server-side hash cache memory, leading to essentially
a kind of memory leak.

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