[
https://issues.apache.org/jira/browse/HBASE-4238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13089099#comment-13089099
]
Jean-Daniel Cryans commented on HBASE-4238:
-------------------------------------------
Log of the issue (daughter region being d06b3b8c85af53ccbe139df7f0877e51):
{quote}
2011-08-22 15:06:50,227 INFO org.apache.hadoop.hbase.catalog.MetaEditor:
Deleted daughter reference
TestTable,,1314050587746.7ada9de242de30a4e91f00a8dfcbf693., qualifier=splitA,
from parent TestTable,,1314050584480.d06b3b8c85af53ccbe139df7f0877e51.
2011-08-22 15:06:50,229 INFO org.apache.hadoop.hbase.catalog.MetaEditor:
Deleted daughter reference
TestTable,0000013824,1314050587746.66c3c9f067203cfb7c0a541e9207766d.,
qualifier=splitB, from parent
TestTable,,1314050584480.d06b3b8c85af53ccbe139df7f0877e51.
2011-08-22 15:06:50,230 DEBUG org.apache.hadoop.hbase.master.CatalogJanitor:
Deleting region TestTable,,1314050584480.d06b3b8c85af53ccbe139df7f0877e51.
because daughter splits no longer hold references
2011-08-22 15:06:50,230 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
DELETING region
file:/tmp/hbase-jdcryans/hbase/TestTable/d06b3b8c85af53ccbe139df7f0877e51
2011-08-22 15:06:50,234 INFO org.apache.hadoop.hbase.catalog.MetaEditor:
Deleted region TestTable,,1314050584480.d06b3b8c85af53ccbe139df7f0877e51. from
META
2011-08-22 15:06:50,235 WARN org.apache.hadoop.hbase.master.CatalogJanitor:
Daughter regiondir does not exist:
file:/tmp/hbase-jdcryans/hbase/TestTable/d06b3b8c85af53ccbe139df7f0877e51
2011-08-22 15:11:50,220 WARN org.apache.hadoop.hbase.master.CatalogJanitor:
Daughter regiondir does not exist:
file:/tmp/hbase-jdcryans/hbase/TestTable/d06b3b8c85af53ccbe139df7f0877e51
2011-08-22 15:16:50,224 WARN org.apache.hadoop.hbase.master.CatalogJanitor:
Daughter regiondir does not exist:
file:/tmp/hbase-jdcryans/hbase/TestTable/d06b3b8c85af53ccbe139df7f0877e51
...
{quote}
Those last lines will happen forever, and .META. will be littered with that row.
> CatalogJanitor can clear a daughter that split before processing its parent
> ---------------------------------------------------------------------------
>
> Key: HBASE-4238
> URL: https://issues.apache.org/jira/browse/HBASE-4238
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.4
> Reporter: Jean-Daniel Cryans
> Priority: Critical
> Fix For: 0.90.5
>
>
> I didn't dig a lot into this issue, but by splitting a table twice in a row I
> was able to trigger a situation where a daughter of the first split was
> deleted by the CatalogJanitor before it processed its parent. Will post log
> in a comment.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
