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https://issues.apache.org/jira/browse/HBASE-11627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14082962#comment-14082962
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Sean Busbey commented on HBASE-11627:
-------------------------------------
[~louis.hust], if there's also an error in the calculation of splitCount it's
probably best to open that as a new ticket. A good indicator that it isn't
directly related to the divide by zero is that if I apply your v3 patch and
then run the test from my v2 patch (without the guard change) then the test
still fails.
> RegionSplitter's rollingSplit terminated with "/ by zero", and the
> _balancedSplit file was not deleted properly
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-11627
> URL: https://issues.apache.org/jira/browse/HBASE-11627
> Project: HBase
> Issue Type: Bug
> Components: Admin, util
> Affects Versions: 0.96.2, 0.98.1
> Environment: CentOS release 6.4 (Final) x86_64 &&
> hbase-0.98.1-cdh5.1.0
> Reporter: louis hust
> Priority: Critical
> Labels: newbie
> Fix For: 0.96.2, 0.98.1
>
> Attachments: HBASE_11627-v2.patch, HBASE_11627-v3.patch,
> HBASE_11627.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> First create a table
> {quote}
> > create 't1', 'f1'
> {quote}
> Then split the table with util:
> {quote}
> > bin/hbase org.apache.hadoop.hbase.util.RegionSplitter -r -o 2 t1
> > UniformSplit
> {quote}
> *Finally get the following error :*
> {quote}
> 12/11/08 19:21:12 DEBUG util.RegionSplitter: All regions have been
> successfully split!
> 12/11/08 19:21:12 DEBUG util.RegionSplitter: TOTAL TIME = 30sec
> 12/11/08 19:21:12 DEBUG util.RegionSplitter: Splits = 0
> Exception in thread "main" java.lang.ArithmeticException: / by zero
> at
> org.apache.hadoop.hbase.util.RegionSplitter.rollingSplit(RegionSplitter.java:576)
> at
> org.apache.hadoop.hbase.util.RegionSplitter.main(RegionSplitter.java:349)
> {quote}
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