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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13356) HBase should provide an InputFormat supporting multiple scans in mapreduce jobs over snapshots
Date Mon, 01 Jun 2015 02:08:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14566877#comment-14566877
] 

Hadoop QA commented on HBASE-13356:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12736474/HBASE-13356.4.patch
  against master branch at commit 0e6102a68cc95f0240fa72a5f86866c07b8744b7.
  ATTACHMENT ID: 12736474

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 14 new or modified
tests.

    {color:green}+1 hadoop versions{color}. The patch compiles with all supported hadoop versions
(2.4.1 2.5.2 2.6.0)

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 protoc{color}.  The applied patch does not increase the total number of
protoc compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number
of checkstyle errors

    {color:green}+1 findbugs{color}.  The patch does not introduce any  new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.backup.TestHFileArchiving

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/14250//testReport/
Release Findbugs (version 2.0.3) 	warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/14250//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/14250//artifact/patchprocess/checkstyle-aggregate.html

  Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/14250//console

This message is automatically generated.

> HBase should provide an InputFormat supporting multiple scans in mapreduce jobs over
snapshots
> ----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-13356
>                 URL: https://issues.apache.org/jira/browse/HBASE-13356
>             Project: HBase
>          Issue Type: New Feature
>          Components: mapreduce
>            Reporter: Andrew Mains
>            Assignee: Andrew Mains
>            Priority: Minor
>         Attachments: HBASE-13356-0.98.patch, HBASE-13356.2.patch, HBASE-13356.3.patch,
HBASE-13356.4.patch, HBASE-13356.patch
>
>
> Currently, HBase supports the pushing of multiple scans to mapreduce jobs over live tables
(via MultiTableInputFormat) but only supports a single scan for mapreduce jobs over table
snapshots. It would be handy to support multiple scans over snapshots as well, probably through
another input format (MultiTableSnapshotInputFormat?). To mimic the functionality present
in MultiTableInputFormat, the new input format would likely have to take in the names of all
snapshots used in addition to the scans.



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