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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 Thu, 19 Nov 2015 00:59:10 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15012503#comment-15012503
] 

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

Github user hnfgns commented on a diff in the pull request:

    https://github.com/apache/drill/pull/260#discussion_r45285848
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/zk/ZkAbstractStore.java
---
    @@ -54,31 +59,26 @@ public ZkAbstractStore(CuratorFramework framework, PStoreConfig<V>
config)
         this.prefix = parent + "/";
         this.framework = framework;
         this.config = config;
    +    this.childrenCache = new PathChildrenCache(framework, parent, true);
    --- End diff --
    
    I consistently use `this` (i) in c'tor assignments or (ii) if there is any shadowing variable.


> 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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