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https://issues.apache.org/jira/browse/HBASE-3996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13569490#comment-13569490
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Hudson commented on HBASE-3996:
-------------------------------
Integrated in HBase-0.94 #822 (See
[https://builds.apache.org/job/HBase-0.94/822/])
HBASE-3996 Support multiple tables and scanners as input to the mapper in
map/reduce jobs (Eran Kutner, Bryan Baugher) (Revision 1441709)
Result = SUCCESS
larsh :
Files :
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/client/Scan.java
*
/hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.java
*
/hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.java
*
/hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/mapreduce/TableMapReduceUtil.java
*
/hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSplit.java
*
/hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMultiTableInputFormat.java
> Support multiple tables and scanners as input to the mapper in map/reduce jobs
> ------------------------------------------------------------------------------
>
> Key: HBASE-3996
> URL: https://issues.apache.org/jira/browse/HBASE-3996
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce
> Reporter: Eran Kutner
> Assignee: Bryan Baugher
> Priority: Critical
> Fix For: 0.96.0, 0.94.5
>
> Attachments: 3996-0.94.txt, 3996-v10.txt, 3996-v11.txt, 3996-v12.txt,
> 3996-v13.txt, 3996-v14.txt, 3996-v15.txt, 3996-v2.txt, 3996-v3.txt,
> 3996-v4.txt, 3996-v5.txt, 3996-v6.txt, 3996-v7.txt, 3996-v8.txt, 3996-v9.txt,
> HBase-3996.patch
>
>
> It seems that in many cases feeding data from multiple tables or multiple
> scanners on a single table can save a lot of time when running map/reduce
> jobs.
> I propose a new MultiTableInputFormat class that would allow doing this.
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