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https://issues.apache.org/jira/browse/HBASE-18090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187070#comment-16187070
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Hudson commented on HBASE-18090:
--------------------------------
FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #3804 (See
[https://builds.apache.org/job/HBase-Trunk_matrix/3804/])
HBASE-18090 Improve TableSnapshotInputFormat to allow more multiple (ashu: rev
4aadc5d322884310ce6ef49fb0031bfbd2a096b9)
* (edit)
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormat.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestRegionSplitter.java
* (edit)
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableSnapshotInputFormat.java
* (edit)
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatTestBase.java
* (edit)
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.java
* (edit)
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableMapReduceUtil.java
* (edit)
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableSnapshotInputFormat.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/client/ClientSideRegionScanner.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/util/RegionSplitter.java
* (edit)
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapred/TableSnapshotInputFormat.java
* (edit)
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapred/TableMapReduceUtil.java
* (edit)
hbase-it/src/test/java/org/apache/hadoop/hbase/mapreduce/IntegrationTestTableSnapshotInputFormat.java
> Improve TableSnapshotInputFormat to allow more multiple mappers per region
> --------------------------------------------------------------------------
>
> Key: HBASE-18090
> URL: https://issues.apache.org/jira/browse/HBASE-18090
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce
> Affects Versions: 3.0.0
> Reporter: Mikhail Antonov
> Assignee: xinxin fan
> Fix For: 3.0.0, 2.0.0-alpha-4
>
> Attachments: HBASE-18090-branch-1.3-v1.patch,
> HBASE-18090-branch-1.3-v2.patch, HBASE-18090-V3-master.patch,
> HBASE-18090-V4-master.patch, HBASE-18090-V5-master.patch
>
>
> TableSnapshotInputFormat runs one map task per region in the table snapshot.
> This places unnecessary restriction that the region layout of the original
> table needs to take the processing resources available to MR job into
> consideration. Allowing to run multiple mappers per region (assuming
> reasonably even key distribution) would be useful.
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