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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-3171) Storage Plugins : Two processes tried to update the storage plugin at the same time
Date Mon, 16 Nov 2015 18:53:11 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15007109#comment-15007109
] 

ASF GitHub Bot commented on DRILL-3171:
---------------------------------------

GitHub user hnfgns opened a pull request:

    https://github.com/apache/drill/pull/260

    DRILL-3171: handle concurrent Zookeeper node creation gracefully

    Make ZK node creation/updates logic optimistic.
    Refactor ZkAbstractStore to eliminate redundant code around node creation logic.
    Enhanced documentation.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/hnfgns/incubator-drill DRILL-3171

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/drill/pull/260.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #260
    
----
commit cf91dc0b123378d94811da8b6c3171f3fd8d714d
Author: Hanifi Gunes <hanifigunes@gmail.com>
Date:   2015-11-04T00:24:48Z

    DRILL-3171: handle concurrent Zookeeper node creation gracefully

----


> Storage Plugins : Two processes tried to update the storage plugin at the same time
> -----------------------------------------------------------------------------------
>
>                 Key: DRILL-3171
>                 URL: https://issues.apache.org/jira/browse/DRILL-3171
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Information Schema
>    Affects Versions: 1.0.0
>            Reporter: Rahul Challapalli
>            Assignee: Hanifi Gunes
>              Labels: test
>             Fix For: Future
>
>
> Commit Id# : bd8ac4fca03ad5043bca27fbc7e0dec5a35ac474
> We have seen this issue happen with the below steps
>    1. Clear out the zookeeper
>    2. Update the storage plugin using the rest API on one of the node
>    3. Submit 10 queries concurrently
> With randomized foreman node selection, the node executing the query might not have the
updated storage plugins info. This could be causing the issue.
> - Rahul



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