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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-6916) HBA logs at info level errors that won't show in the shell
Date Thu, 04 Oct 2012 21:23:48 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jean-Daniel Cryans updated HBASE-6916:

       Resolution: Fixed
    Fix Version/s:     (was: 0.94.3)
                       (was: 0.92.2)
     Release Note: The close_region shell command won't fail silently anymore, code relying
on this behavior will now get UnknownRegionException
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

Committed to .92, .94, and trunk. Thanks for the reviews guys.
> HBA logs at info level errors that won't show in the shell
> ----------------------------------------------------------
>                 Key: HBASE-6916
>                 URL: https://issues.apache.org/jira/browse/HBASE-6916
>             Project: HBase
>          Issue Type: Bug
>          Components: shell
>    Affects Versions: 0.90.6, 0.92.1, 0.94.1, 0.96.0
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>            Priority: Minor
>             Fix For: 0.92.3, 0.94.2, 0.96.0
>         Attachments: HBASE-6916-0.94.patch, HBASE-6916.patch, HBASE-6916-v2.patch
> There is a weird interaction between the shell and HBA. When you try to close a region
that doesn't exist, it doesn't throw any error:
> {noformat}
> hbase(main):029:0> close_region 'thisisaninvalidregion'
> 0 row(s) in 0.0580 seconds
> {noformat}
> Normally one should get UnknownRegionException. Starting the shell with "-d" I see what
a non-shell user would see along with a ton of logging from ZK (skipped here):
> {noformat}
> INFO client.HBaseAdmin: No server in .META. for thisisaninvalidregion; pair=null
> {noformat}
> But again this is not the right message, it should have shown
> {noformat}
> INFO client.HBaseAdmin: No server in .META. for thisisaninvalidregion; pair=null
> {noformat}
> And this is because that part of the code treats both UnknownRegionException and NoServerForRegionException
like if it was the same thing.
> There is also some ugliness in flush, compact, and split but it normally doesn't show
since the code treats everything like it's a table and sends a TableNotFoundException.
> This jira is about making sure that the exceptions are correctly coming out.

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