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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-13342) Improve logging in llap decider for llap
Date Wed, 23 Mar 2016 23:31:25 GMT

    [ https://issues.apache.org/jira/browse/HIVE-13342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15209416#comment-15209416
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Siddharth Seth commented on HIVE-13342:
---------------------------------------

Couple of possible enhancements.
LOG.info("some operators cannot be run in llap"); - not very useful. This should include additional
context. Is that coming from other log lines ?


{code}
throw new SemanticException("Llap mode is set to all but cannot run work in llap mode. "
+ "Set hive.llap.execution.mode = auto or set hive.execution.mode = auto");
{code}
hive.execution.mode=auto does not exist. The value is container. Can we refer to the constants
in HiveConf - in case the values change.

{code}
throw new SemanticException("Llap mode is set to all but cannot run work in llap mode. "
            + "Set hive.llap.execution.mode = auto or set hive.execution.mode = auto");
{code}
extra can.

In terms of the exception - this changes the current behaviour for mode=ALL. Should we add
a new mode which is ALL_ALLOW_FALLBACK or some such to retain current behaviour for ALL.


> Improve logging in llap decider for llap
> ----------------------------------------
>
>                 Key: HIVE-13342
>                 URL: https://issues.apache.org/jira/browse/HIVE-13342
>             Project: Hive
>          Issue Type: Bug
>          Components: llap
>    Affects Versions: 2.1.0
>            Reporter: Vikram Dixit K
>            Assignee: Vikram Dixit K
>         Attachments: HIVE-13342.1.patch
>
>
> Currently we do not log our decisions with respect to llap. Are we running everything
in llap mode or only parts of the plan. We need more logging. Also, if llap mode is all but
for some reason, we cannot run the work in llap mode, fail and throw an exception advise the
user to change the mode to auto.



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