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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-20853) Expose ShuffleHandler.registerDag in the llap daemon API
Date Sun, 04 Nov 2018 05:27:00 GMT


Hive QA commented on HIVE-20853:

Here are the results of testing the latest attachment:

{color:red}ERROR:{color} -1 due to build exiting with an error

Test results:
Console output:
Test logs:

Executing org.apache.hive.ptest.execution.TestCheckPhase
Tests exited with: Exception: Patch URL
was found in seen patch url's cache and a test was probably run already on it. Aborting...

This message is automatically generated.

ATTACHMENT ID: 12946800 - PreCommit-HIVE-Build

> Expose ShuffleHandler.registerDag in the llap daemon API
> --------------------------------------------------------
>                 Key: HIVE-20853
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: llap
>    Affects Versions: 3.1.0
>            Reporter: Jaume M
>            Assignee: Jaume M
>            Priority: Critical
>         Attachments: HIVE-20853.1.patch, HIVE-20853.2.patch
> Currently DAGs are only registered when a submitWork is called for that DAG. At this
point the crendentials are added to the ShuffleHandler and it can start serving.
> However Tez might (and will) schedule tasks to fetch from the ShuffleHandler before anything
of this happens and all this tasks will fail which may results in the query failing.
> This happens in the scenario in which a LlapDaemon just comes up and tez fetchers try
to open a connection before a DAG has been registered.
> Adding this API will allow to register the DAG against the Daemon when the AM notices
that a new Daemon is up.

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