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https://issues.apache.org/jira/browse/HBASE-12957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14529937#comment-14529937
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Lars Hofhansl commented on HBASE-12957:
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We're seeing error like these now when we actually run region_mover.rb:
{code}
NoMethodError: undefined method `InclusiveStopFilter' for main:Object
isSuccessfulScan at
/home/sfdc/current//bigdata-hbase/hbase/hbase/bin/region_mover.rb:105
unloadRegions at
/home/sfdc/current//bigdata-hbase/hbase/hbase/bin/region_mover.rb:328
call at org/jruby/RubyProc.java:270
call at org/jruby/RubyProc.java:220
initialize at
/home/sfdc/current/bigdata-hbase/hbase/hbase/bin/thread-pool.rb:33
loop at org/jruby/RubyKernel.java:1439
initialize at
/home/sfdc/current/bigdata-hbase/hbase/hbase/bin/thread-pool.rb:31
catch at org/jruby/RubyKernel.java:1212
initialize at
/home/sfdc/current/bigdata-hbase/hbase/hbase/bin/thread-pool.rb:30
call at org/jruby/RubyProc.java:270
call at org/jruby/RubyProc.java:224
{code}
> region_mover#isSuccessfulScan may be extremely slow on region with lots of
> expired data
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-12957
> URL: https://issues.apache.org/jira/browse/HBASE-12957
> Project: HBase
> Issue Type: Improvement
> Components: scripts
> Reporter: hongyu bi
> Assignee: hongyu bi
> Priority: Minor
> Fix For: 2.0.0, 1.1.0, 0.98.11
>
> Attachments: HBASE-12957-v0.patch
>
>
> region_mover will call isSuccessfulScan when region has moved to make sure
> it's healthy, however , if the moved region has lots of expired data
> region_mover#isSuccessfulScan will take a long time to finish ,that may even
> exceed "lease timeout".So I made isSuccessfulScan a get-like scan to achieve
> faster response in that case.
> workaround:before graceful_stop/rolling_restart ，call major_compact on the
> table with small TTL
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