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https://issues.apache.org/jira/browse/MAPREDUCE-3607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tom White updated MAPREDUCE-3607:
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Attachment: MAPREDUCE-3607.patch
Here's a new patch which adds FieldSelectionMapper/Reducer, NLineInputFormat,
SequenceFile input/output formats, JobControl, and partition classes, along
with tests for all of the classes.
The results of test-patch:
{noformat}
[exec] -1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 100 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] -1 findbugs. The patch appears to introduce 5 new Findbugs
(version 1.3.9) warnings.
{noformat}
Note the findbugs warnings are present in trunk too, since this is a backport.
Tests pass.
I would like this to be considered for inclusion in 1.1.0.
> Port missing new API mapreduce lib classes to 1.x
> -------------------------------------------------
>
> Key: MAPREDUCE-3607
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3607
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: client
> Affects Versions: 1.0.0
> Reporter: Tom White
> Assignee: Tom White
> Attachments: MAPREDUCE-3607.patch, MAPREDUCE-3607.patch
>
>
> There are a number of classes under mapreduce.lib that are not present in the
> 1.x series. Including these would help users and downstream projects using
> the new MapReduce API migrate to later versions of Hadoop in the future.
> A few examples of where this would help:
> * Sqoop uses mapreduce.lib.db.DBWritable and
> mapreduce.lib.input.CombineFileInputFormat (SQOOP-384).
> * Mahout uses mapreduce.lib.output.MultipleOutputs (MAHOUT-822).
> * HBase has a backport of mapreduce.lib.partition.InputSampler and
> TotalOrderPartitioner (in org.apache.hadoop.hbase.mapreduce.hadoopbackport) -
> it would be better if it used the ones in Hadoop.
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