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From "rajeshbabu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10549) When there is a hole, LoadIncrementalHFiles will hang in an infinite loop.
Date Thu, 06 Mar 2014 08:42:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13922170#comment-13922170
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rajeshbabu commented on HBASE-10549:
------------------------------------

{code}
String testName = "groupOrSplitWhenHoleExistInMeta";
{code}
Better to change as testGroupOrSplitWhenRegionHoleExistsInMeta

{code}
    this.deleteMetaInfo(testName, Bytes.toBytes("20"));
{code}
Instead of rewriting deleting entry from meta, you can use MetaEditor#deleteRegions

{code}
    util.waitTableEnabled(TABLE);
{code}
HBaseAdmin#createTable comes out when table is enabled, so this check is not required.







> 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: 0.94.11
>            Reporter: yuanxinen
>            Assignee: yuanxinen
>             Fix For: 0.96.2, 0.98.1, 0.99.0, 0.94.18
>
>         Attachments: 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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