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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-2556) Subqueries with nested joins may not free hash cache
Date Tue, 05 Jan 2016 15:32:39 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-2556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15083229#comment-15083229
] 

Hudson commented on PHOENIX-2556:
---------------------------------

SUCCESS: Integrated in Phoenix-master #1049 (See [https://builds.apache.org/job/Phoenix-master/1049/])
PHOENIX-2556 Subqueries with nested joins may not free hash cache (maryannxue: rev 07cdaa4405dd7628669b595a75af14116bb961f1)
* phoenix-core/src/it/java/org/apache/phoenix/end2end/ConnectionQueryServicesTestImpl.java
* phoenix-core/src/main/java/org/apache/phoenix/compile/DeleteCompiler.java
* phoenix-core/src/it/java/org/apache/phoenix/end2end/SubqueryIT.java
* phoenix-core/src/main/java/org/apache/phoenix/execute/HashJoinPlan.java


> Subqueries with nested joins may not free hash cache
> ----------------------------------------------------
>
>                 Key: PHOENIX-2556
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2556
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: Maryann Xue
>             Fix For: 4.7.0
>
>         Attachments: PHOENIX-2556.patch, PHOENIX-2556_wip.patch
>
>
> Subqueries with nested joins are only freeing some of the server-side hash cache memory,
leading to essentially a kind of memory leak.
> This problem occurs with the existing test case in SubqueryIT:
> {code}
>  SELECT name from Join.CustomerTable 
>  WHERE "customer_id" IN 
>     (SELECT "customer_id" FROM Join.ItemTable i
>      JOIN Join.OrderTable o 
>      ON o."item_id" = i."item_id"
>      WHERE i.name = 'T2'
>      OR quantity >
>          (SELECT avg(quantity) FROM Join.OrderTable q
>           WHERE o."item_id" = q."item_id"))
> {code}



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