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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-15347) LLAP: Executor memory and Xmx should have some headroom for other services
Date Wed, 22 Feb 2017 08:18:44 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15753816#comment-15753816
] 

Lefty Leverenz edited comment on HIVE-15347 at 2/22/17 8:18 AM:
----------------------------------------------------------------

Doc note:  This adds *hive.llap.daemon.headroom.memory.per.instance.mb* to HiveConf.java and
changes the default of *hive.llap.daemon.memory.per.instance.mb* back to 4096 (after HIVE-15159
changed it to 3276, also in 2.2.0).

Only *hive.llap.daemon.headroom.memory.per.instance.mb* needs to be documented in the wiki.

* [Configuration Properties -- LLAP | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-LLAP]

Added a TODOC2.2 label.

Edit (22/Feb/17):  HIVE-15959 removes *hive.llap.daemon.headroom.memory.per.instance.mb* in
2.2.0, so it doesn't need to be documented after all.  Removing the TODOC2.2 label.


was (Author: lefty@hortonworks.com):
Doc note:  This adds *hive.llap.daemon.headroom.memory.per.instance.mb* to HiveConf.java and
changes the default of *hive.llap.daemon.memory.per.instance.mb* back to 4096 (after HIVE-15159
changed it to 3276, also in 2.2.0).

Only *hive.llap.daemon.headroom.memory.per.instance.mb* needs to be documented in the wiki.

* [Configuration Properties -- LLAP | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-LLAP]

Added a TODOC2.2 label.

> LLAP: Executor memory and Xmx should have some headroom for other services
> --------------------------------------------------------------------------
>
>                 Key: HIVE-15347
>                 URL: https://issues.apache.org/jira/browse/HIVE-15347
>             Project: Hive
>          Issue Type: Bug
>          Components: llap
>    Affects Versions: 2.2.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>            Priority: Critical
>             Fix For: 2.2.0
>
>         Attachments: HIVE-15347.1.patch
>
>
> If executor memory + cache memory is configured close or equal to Xmx, the task attempts
that is causing OOM can take down the LLAP daemon. Provide some leeway for other services
during memory crunch. 



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