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From "David Tucker (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-1427) Failure to initialize storage plug-in results in complete failure of drill-bit initialization
Date Wed, 17 Sep 2014 04:16:33 GMT

    [ https://issues.apache.org/jira/browse/DRILL-1427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14136749#comment-14136749
] 

David Tucker commented on DRILL-1427:
-------------------------------------

I concur ... disabling the plug-in with a warning in the Drill log seems the superior choice.
  A per-plug-in configurable time-out would be a bonus.

I'm assuming there is an obvious "plug-in not on-line" message should a query be made against
a configured but not enabled storage plug-in.


> Failure to initialize storage plug-in results in complete failure of drill-bit initialization
> ---------------------------------------------------------------------------------------------
>
>                 Key: DRILL-1427
>                 URL: https://issues.apache.org/jira/browse/DRILL-1427
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Functions - Drill
>    Affects Versions: 0.5.0
>         Environment: Observed on CentOS 6.4 on AWS instances
>            Reporter: David Tucker
>            Assignee: Aditya Kishore
>
> The storage plug-in configuration screen identifies when a plug-in fails to initializes
(eg the Hive server is down) and will leave the plug-in disabled (or fail to creat it altogether).
  However, if a configured storage plug-in is not on line when the drill-bit is launched,
all attempts at interactive queries (via sqlline or ODBC) fail to proceed.   The impression
left with the user is that the drill-bit is completely off-line.
> To reproduce:
>     1. configure Hive storage plug-in and execute simple queries
>     2. shut down drill-bit
>     3. shut down Hive server
>     4. re-launch the drill-bit
>     5. launch sqlline
>           ... no connection will be established, no queries will be possible



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