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https://issues.apache.org/jira/browse/HBASE-12904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14289007#comment-14289007
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Hudson commented on HBASE-12904:
--------------------------------
SUCCESS: Integrated in HBase-0.98-on-Hadoop-1.1 #773 (See
[https://builds.apache.org/job/HBase-0.98-on-Hadoop-1.1/773/])
HBASE-12904 Threading issues in region_mover.rb (apurtell: rev
077f9ea4b0e276960a7171c005faad56a06812c4)
* bin/region_mover.rb
> Threading issues in region_mover.rb
> -----------------------------------
>
> Key: HBASE-12904
> URL: https://issues.apache.org/jira/browse/HBASE-12904
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.9
> Reporter: Lars Hofhansl
> Assignee: Andrew Purtell
> Fix For: 1.0.0, 2.0.0, 0.98.10, 1.1.0
>
> Attachments: HBASE-12904-0.98.patch, HBASE-12904.patch
>
>
> We've seen various race conditions when using region_mover with multiple
> threads.
> {code}
> NoMethodError: undefined method `getScanner' for nil:NilClass
> isSuccessfulScan at
> /home/sfdc/current//bigdata-hbase/hbase/hbase/bin/region_mover.rb:138
> unloadRegions at
> /home/sfdc/current//bigdata-hbase/hbase/hbase/bin/region_mover.rb:360
> {code}
> {code}
> NoMethodError: undefined method `[]=' for nil:NilClass
> getTable at
> /home/sfdc/current//bigdata-hbase/hbase/hbase/bin/region_mover.rb:64
> unloadRegions at
> /home/sfdc/current//bigdata-hbase/hbase/hbase/bin/region_mover.rb:359
> {code}
> Looking at getTable, it's not thread safe. So the multithreaded that was
> added is incorrect.
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