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From "Bryan Duxbury (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-27) [hbase] hregioninfo cell empty in meta table
Date Mon, 10 Mar 2008 21:54:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-27?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12577218#action_12577218
] 

Bryan Duxbury commented on HBASE-27:
------------------------------------

Is there any chance that we are seeing the row halfway through an update? If so, then deleting
the entire thing when one of the cells is empty would really break things. 

The original suggestion was to use deleteAll in situations where we wanted to delete a row,
and assume that the problem was some rows were incompletely cleaned up because we weren't
doing deleteAll before. In that regard, I think the change to HRegion is correct, but perhaps
the cleanup in HMaster is premature. 

Should we commit a patch with just the HRegion deleteAll change, and see if this problem manifests
itself any further?

> [hbase] hregioninfo cell empty in meta table
> --------------------------------------------
>
>                 Key: HBASE-27
>                 URL: https://issues.apache.org/jira/browse/HBASE-27
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.1.0
>            Reporter: stack
>            Assignee: Jim Kellerman
>            Priority: Blocker
>             Fix For: 0.1.0
>
>         Attachments: patch.txt
>
>
> When we notice one of these, instead of reporting on it over and over -- see below --
lets just axe the whole row.   Its never going to get better on its own.  We should also figure
how these horked rows get manufactured.  Below is about split cells but also instances where
servercode and servername are all thats left in a row.
> {code}
> 2008-01-24 02:01:02,761 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,761 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,762 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,762 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,762 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,763 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitB]
> 2008-01-24 02:01:02,763 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,763 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,764 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,764 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,764 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitB]
> 2008-01-24 02:01:02,765 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,765 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,765 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,766 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,766 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,766 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitB]
> 2008-01-24 02:01:02,767 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,767 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitB]
> 2008-01-24 02:01:02,767 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,768 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitB]
> 2008-01-24 02:01:02,768 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitB]
> 2008-01-24 02:01:02,768 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,769 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,769 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,769 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,770 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,770 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> 2008-01-24 02:01:02,771 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,771 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitB]
> 2008-01-24 02:01:02,771 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA, info:splitB]
> 2008-01-24 02:01:02,772 WARN org.apache.hadoop.hbase.HMaster:
> info:regioninfo is empty; has keys: [info:splitA]
> {code}

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