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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1522) We delete splits before their time occasionally
Date Mon, 15 Jun 2009 16:34:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12719631#action_12719631
] 

stack commented on HBASE-1522:
------------------------------

Just to note that hbase-1495 had a patch to fix this and hbase-1523.  Sorry you had to find
them yourself (My fault for letting 1495 hang out there so long).  Was going to commit along
with proper fix for 1495, once I'd figure premature parent removal.  Will now see if recent
commits have fixed the last problem reported in 1495.

> We delete splits before their time occasionally
> -----------------------------------------------
>
>                 Key: HBASE-1522
>                 URL: https://issues.apache.org/jira/browse/HBASE-1522
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.0
>            Reporter: ryan rawson
>            Assignee: ryan rawson
>            Priority: Blocker
>             Fix For: 0.20.0
>
>
> the master logfile says:
> 2009-06-13 01:47:50,993 DEBUG org.apache.hadoop.hbase.master.BaseScanner: Looking for
reference files in: hdfs://borg13:9000/hbase-1304/table/582659871/default2009-06-13 01:47:50,994
DEBUG org.apache.hadoop.hbase.master.BaseScanner: isReference: hdfs://borg13:9000/hbase-1304/table/582659871/default/7693630986938671024
> 2009-06-13 01:47:50,995 DEBUG org.apache.hadoop.hbase.master.BaseScanner: table,,1244880487129/582659871
no longer has references to table,,1244877673805
> 2009-06-13 01:47:51,007 DEBUG org.apache.hadoop.hbase.master.BaseScanner: Looking for
reference files in: hdfs://borg13:9000/hbase-1304/table/582659871/default2009-06-13 01:47:51,007
DEBUG org.apache.hadoop.hbase.master.BaseScanner: isReference: hdfs://borg13:9000/hbase-1304/table/582659871/default/7693630986938671024
> 2009-06-13 01:47:51,008 DEBUG org.apache.hadoop.hbase.master.BaseScanner: table,,1244880487129/582659871
no longer has references to table,,12448776738
> 052009-06-13 01:47:51,009 INFO org.apache.hadoop.hbase.master.BaseScanner: Deleting region
table,,1244877673805 (encoded=1481906432) because daughter splits no longe
> r hold references2009-06-13 01:47:51,009 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
DELETING region hdfs://borg13:9000/hbase-1304/table/1481906432
> As you can see, apparently splitA and splitB point to the same region!

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