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From "Prasanth Jayachandran (JIRA)" <>
Subject [jira] [Commented] (HIVE-16503) LLAP: Oversubscribe memory for noconditional task size
Date Tue, 25 Apr 2017 00:49:04 GMT


Prasanth Jayachandran commented on HIVE-16503:

test failures are unrelated to the patch. accumulo_index.q and accumulo_index.q are already
failing in master. skewjoinopt1.q passes locally for me which is probably flaky. I will trigger
another test run to make sure anyways.

> LLAP: Oversubscribe memory for noconditional task size
> ------------------------------------------------------
>                 Key: HIVE-16503
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: llap
>    Affects Versions: 3.0.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-16503.1.patch, HIVE-16503.2.patch
> When running map joins in llap, it can potentially use more memory for hash table loading
(assuming other executors in the daemons have some memory to spare). This map join conversion
decision has to be made during compilation that can provide some more room for LLAP. 

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