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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10549) When there is a hole, LoadIncrementalHFiles will hang in an infinite loop.
Date Fri, 14 Mar 2014 23:14:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13935808#comment-13935808
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stack commented on HBASE-10549:
-------------------------------

@rajeshbabu and [~Auraro]

This patch has a test that fails up on our build box.  See here:

https://builds.apache.org/job/hbase-0.96/349/testReport/org.apache.hadoop.hbase.mapreduce/TestLoadIncrementalHFilesSplitRecovery/testGroupOrSplitWhenRegionHoleExistsInMeta/

https://builds.apache.org/view/H-L/view/HBase/job/hbase-0.96-hadoop2/239/

Can you take a look please?  If you can't do it soon, just say and I'll back this out.  Thanks.

> When there is a hole, LoadIncrementalHFiles will hang in an infinite loop.
> --------------------------------------------------------------------------
>
>                 Key: HBASE-10549
>                 URL: https://issues.apache.org/jira/browse/HBASE-10549
>             Project: HBase
>          Issue Type: Bug
>          Components: HFile
>    Affects Versions: 0.98.0, 0.94.11, 0.96.1.1
>            Reporter: yuanxinen
>            Assignee: yuanxinen
>             Fix For: 0.96.2, 0.98.1, 0.99.0, 0.94.18
>
>         Attachments: HBASE-10549-0.94, HBASE-10549-trunk-2014-03-13.patch, HBASE-10549-trunk.patch
>
>
> First,I explan my test steps.
> 1.importtsv
> 2.split the region
> 3.delete the region info from .META.(make a hole)
> 4.LoadIncrementalHFiles (this step will hung up in an infinite loop)
> I check the log,there are two issues
> 1.it create _tmp folder in an infinite loop.
> hdfs://hacluster/output3/i/_tmp/_tmp/_tmp/_tmp/_tmp/_tmp/test_table,136.bottom
> 2.when slpliting the hfile,it put the first line data(1211) into two files(top and bottom)
> Input File=hdfs://hacluster/output3/i/3ac6ec287c644a8fb72d96b13e31f576,outFile=hdfs://hacluster/output3/i/_tmp/test_table,2.top,KeyValue=1211/i:value/1390469306407/Put/vlen=1/ts=0
> Input File=hdfs://hacluster/output3/i/3ac6ec287c644a8fb72d96b13e31f576,outFile=hdfs://hacluster/output3/i/_tmp/test_table,2.bottom,KeyValue=1211/i:value/1390469306407/Put/vlen=1/ts=0
> and then I check the code.
> So I think before spliting the hfile,we should check the consistency of startkey and
endkey,if something wrong,we should throw the exception,and stop LoadIncrementalHFiles.



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