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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12875) Region mover script region_mover.rb sometimes fail with NPE
Date Wed, 21 Jan 2015 17:30:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14285930#comment-14285930
] 

Andrew Purtell commented on HBASE-12875:
----------------------------------------

Any significant reason not to just remove the attempts to scan the region after relocation?
We know the region has moved off the draining server, why wait? 

> Region mover script region_mover.rb sometimes fail with NPE
> -----------------------------------------------------------
>
>                 Key: HBASE-12875
>                 URL: https://issues.apache.org/jira/browse/HBASE-12875
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.98.8
>            Reporter: Sameer Vaishampayan
>            Assignee: Sameer Vaishampayan
>            Priority: Minor
>
> Moved region _IDX_EVENT.PLATFORM_EVENT_METRICS,\x0B\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00,1421392135537.f058d58e0560a5a0d681d3345d778b71.
cost: 1.643
> NoMethodError: undefined method `getScanner' for nil:NilClass
>   isSuccessfulScan at <>/bin/region_mover.rb:138
>      unloadRegions at <>/bin/region_mover.rb:360
>               call at org/jruby/RubyProc.java:270
>               call at org/jruby/RubyProc.java:220
>         initialize at<>/bin/thread-pool.rb:33
>               loop at org/jruby/RubyKernel.java:1439
>         initialize at <>/bin/thread-pool.rb:31
>              catch at org/jruby/RubyKernel.java:1212
>         initialize at <>/bin/thread-pool.rb:30
>               call at org/jruby/RubyProc.java:270
>               call at org/jruby/RubyProc.java:224



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