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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2011/07/23 23:55:09 UTC

[jira] [Updated] (HBASE-4129) hbase-3872 added a warn message 'CatalogJanitor: Daughter regiondir does not exist' that is triggered though its often legit that daughter is not present

     [ https://issues.apache.org/jira/browse/HBASE-4129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-4129:
-------------------------

    Attachment: 3872.txt

So, I think the issue is that the HRegionInfo comparator is sorting daughters' before parents so we process daughter first, then parent.  Rather than change the HRI comparator, a radical move, I just made a version of it over in CatalogJanitor that will sort parents first.  This should make it so I do not have to relax requirement that a daughter region exist before I can remove parent.  Testing on cluster now.

> hbase-3872 added a warn message 'CatalogJanitor: Daughter regiondir does not exist' that is triggered though its often legit that daughter is not present
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4129
>                 URL: https://issues.apache.org/jira/browse/HBASE-4129
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.4
>            Reporter: stack
>            Assignee: stack
>             Fix For: 0.90.4
>
>         Attachments: 3872.txt
>
>
> If a daughter region is split before the catalog janitor runs, we'll see:
> {code}
> 2011-07-22 16:10:26,398 WARN org.apache.hadoop.hbase.master.CatalogJanitor: Daughter regiondir does not exist: hdfs://sv4borg227:10000/hbase/TestTable/a1023b2b00fe44c86bd8ae3633f531fa
> {code}
> Its legit that the daughter region does not exist in this case (it was just cleaned up by the catalogjanitor).

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