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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1761) getclosest doesn't understand delete family; manifests as "HRegionInfo was null or empty in .META" A.K.A the BS problem
Date Sat, 15 Aug 2009 16:03:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12743731#action_12743731
] 

stack commented on HBASE-1761:
------------------------------

Hmm. You are right on the early-out not working.  Let me fix that.  I think its something
we want.  Let me add:

if catalog table, parse key for table and row component and do compares minus region id component.
 A key only becomes a candidate if its from requested table.

> getclosest doesn't understand delete family; manifests as "HRegionInfo was null or empty
in .META" A.K.A the BS problem
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-1761
>                 URL: https://issues.apache.org/jira/browse/HBASE-1761
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>             Fix For: 0.20.0
>
>         Attachments: 1761-v10.patch, 1761-v11.patch, 1761-v2.patch, 1761-v3.patch, 1761-v4.patch,
1761-v5.patch, 1761-v6.patch, 1761-v7.patch, 1761-v9.patch, 1761.patch
>
>
> getclosestatorbefore was not converted to deal with the new delete types.  It only knows
how to process old style deletes.  Usually all is well as edits come in but its possible to
get into state where you have persisted in one file a deletefamily for all in meta and in
the file behind it, there are entries on the info family.  Since closest doesn't understand
deletefamily, it will return the Put rows only for the subsequent getfull, which knows how
to work with deletefamilies fail.
> Once this happens, table is hosed.  Seen on Bradford Stephens upload and at Powerset.
 "Fix" is flush and major compact.  Gives impression that hbase is 'delicate'.  Fixing.

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