[ 
https://issues.apache.org/jira/browse/MAHOUT-822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Tom White updated MAHOUT-822:
-----------------------------

    Attachment: MAHOUT-822.patch

Here's a new version of the patch that applies against trunk. As it stands it 
passes tests against 0.20-based Hadoop, and there a few failures against 
0.23.0, but Mahout is essentially usable against that version. So committing 
this would not cause any regressions and would help the Bigtop folks.

I also opened MAPREDUCE-3607 to get the new API version of MultipleOutputs into 
Hadoop 1.x (the evolution of the 0.20 line), which will hopefully help get 
BtJob running consistently on all Hadoop versions.

                
> Mahout needs to be made compatible with Hadoop .23 releases
> -----------------------------------------------------------
>
>                 Key: MAHOUT-822
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-822
>             Project: Mahout
>          Issue Type: Improvement
>          Components: build
>    Affects Versions: 0.6
>            Reporter: Roman Shaposhnik
>              Labels: bigtop
>         Attachments: MAHOUT-822-build.patch.txt, MAHOUT-822.patch, 
> MAHOUT-822.patch, MAHOUT-822.patch, MAHOUT-822.patch, MAHOUT-822.patch
>
>
> As part of the Hadoop stack integration project (Apache Bigtop) we are now 
> trying to compile Mahout's upcoming 0.6 release against Hadoop 0.22 and 0.23.
> I'm attaching the patch to Mahout's Maven build system that made it possible. 
> I would also like to request help in solving the real issues that poped
> up when we tried to compile Mahout: 
> http://bigtop01.cloudera.org:8080/job/Bigtop-hadoop22/COMPONENT=mahout,label=centos5/6/console
> {noformat}
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/Step0JobTest.java:[182,33]
>  org.apache.hadoop.mapreduce.TaskAttemptContext is abstract; cannot be 
> instantiated
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/Step0JobTest.java:[218,9]
>  org.apache.mahout.df.mapreduce.partial.Step0JobTest.Step0Context is not 
> abstract and does not override abstract method getInputSplit() in 
> org.apache.hadoop.mapreduce.MapContext
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/Step0JobTest.java:[229,12]
>  cannot find symbol
> [ERROR] symbol  : constructor 
> Context(org.apache.hadoop.conf.Configuration,org.apache.hadoop.mapreduce.TaskAttemptID,<nulltype>,<nulltype>,<nulltype>,<nulltype>,<nulltype>)
> [ERROR] location: class org.apache.hadoop.mapreduce.Mapper.Context
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/common/DummyRecordWriter.java:[68,18]
>  org.apache.hadoop.mapreduce.Mapper.Context is abstract; cannot be 
> instantiated
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/common/DummyRecordWriter.java:[77,19]
>  org.apache.hadoop.mapreduce.Reducer.Context is abstract; cannot be 
> instantiated
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/PartialSequentialBuilder.java:[110,30]
>  org.apache.hadoop.mapreduce.TaskAttemptContext is abstract; cannot be 
> instantiated
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/PartialSequentialBuilder.java:[206,28]
>  org.apache.hadoop.mapreduce.JobContext is abstract; cannot be instantiated
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/PartialSequentialBuilder.java:[227,30]
>  org.apache.hadoop.mapreduce.TaskAttemptContext is abstract; cannot be 
> instantiated
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/MockContext.java:[30,6]
>  org.apache.mahout.df.mapreduce.partial.MockContext is not abstract and does 
> not override abstract method getInputSplit() in 
> org.apache.hadoop.mapreduce.MapContext
> [ERROR] 
> /mnt/jenkins/workspace/workspace/Bigtop-hadoop22/COMPONENT/mahout/label/centos5/build/mahout/rpm/BUILD/apache-mahout-c298f70/core/src/test/java/org/apache/mahout/df/mapreduce/partial/MockContext.java:[38,10]
>  cannot find symbol
> {noformat}

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