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https://issues.apache.org/jira/browse/MAHOUT-822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13117856#comment-13117856
]
Sean Owen commented on MAHOUT-822:
----------------------------------
Yes I think there's going to be a medium-sized patch needed to start using 0.23
when 0.23 is out and in some use. I don't think that's going to happen in the
next few months, so would probably hang on to this for a version after 0.6, but
valid nonetheless. When we hit that point we'll just move everything to 0.23
since I don't think it will be possible to select it with Maven-only changes;
there are some small but incompatible API changes.
> 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
> Attachments: MAHOUT-822-build.patch.txt
>
>
> 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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