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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1508) Shell "close_region" reveals a Master<>HRS problem, regions are not reassigned
Date Sun, 21 Jun 2009 07:38:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12722311#action_12722311
] 

ryan rawson commented on HBASE-1508:
------------------------------------

HBASE-1558 will cause troubles in this area.  It might be the root cause in fact...

Since the Master relies on the HRS to report it, if it never does we'll never really close
it... but assuming that the region got closed then opened again, 1558 will cause problems
with scanners seeing the new region assignment since the delete will be masking the put.

Code inspecting doesnt seem to suggest there is anything else going on, so can you try this
again with latest trunk?

> Shell "close_region" reveals a Master<>HRS problem, regions are not reassigned
> ------------------------------------------------------------------------------
>
>                 Key: HBASE-1508
>                 URL: https://issues.apache.org/jira/browse/HBASE-1508
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.20.0
>            Reporter: Lars George
>            Priority: Blocker
>             Fix For: 0.20.0
>
>
> When issuing a "close_region" on the shell the Master logs these entries:
> {code}
> ...
> 2009-06-09 22:11:31,141 DEBUG org.apache.hadoop.hbase.master.RegionManager: Applying
operation in tasklists to region
> 2009-06-09 22:11:33,557 DEBUG org.apache.hadoop.hbase.master.HMaster: Attempting to close
region: TestTable,0000291328,1244572849139
> 2009-06-09 22:11:33,560 INFO org.apache.hadoop.hbase.master.HMaster: Marking TestTable,0000291328,1244572849139
as closed on 192.168.2.103:63745; cleaning SERVER + STARTCODE; master will tell regionserver
to close region on next heartbeat
> 2009-06-09 22:11:34,156 DEBUG org.apache.hadoop.hbase.master.RegionManager: Applying
operation in tasklists to region
> ...
> {code}
> But that is it, no further processing is done. The regions stays closed, and even across
a restart it stays closed. 
> According to what I got told the region should be automatically reassigned to a new server.
Please confirm that this is what is expected. If not and the above seems right, then please
disregard and close issue.

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