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https://issues.apache.org/jira/browse/DRILL-3171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15007109#comment-15007109
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ASF GitHub Bot commented on DRILL-3171:
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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 <[email protected]>
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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