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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14442) MultiTableInputFormatBase.getSplits dosenot build split for a scan whose startRow=stopRow=(startRow of a region)
Date Thu, 01 Oct 2015 13:57:26 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14939855#comment-14939855
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Nick Dimiduk commented on HBASE-14442:
--------------------------------------

Can you explain what you're trying to accomplish here? From the javadoc, {{setStartRow}} is
inclusive while {{setStopRow}} is exclusive. If you want to read only one row, use a {{Get}}
or, as the doc says, append a {{0}} to the stop row.

Sorry to have made you do the work previously [~zhwy103], but I think we should close this
ticket as invalid.

http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Scan.html#setStartRow(byte[])
http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Scan.html#setStopRow(byte[])

> MultiTableInputFormatBase.getSplits dosenot build split for a scan whose startRow=stopRow=(startRow
of a region)
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-14442
>                 URL: https://issues.apache.org/jira/browse/HBASE-14442
>             Project: HBase
>          Issue Type: Bug
>          Components: mapreduce
>    Affects Versions: 1.1.2
>            Reporter: Nathan
>            Assignee: Nathan
>   Original Estimate: 0.5h
>  Remaining Estimate: 0.5h
>
> I created a Scan whose startRow and stopRow are the same with a region's startRow, then
I found no map was built. 
> The following is the source code of this condtion:
> (startRow.length == 0 || keys.getSecond()[i].length == 0 ||
>                     Bytes.compareTo(startRow, keys.getSecond()[i]) < 0) &&
>                     (stopRow.length == 0 || Bytes.compareTo(stopRow,
>                             keys.getFirst()[i]) > 0)
> I think  a "=" should be added.



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