FAQ
Generated POMs hardcode dependency on hadoop-common version 0.22.0-SNAPSHOT
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Key: MAPREDUCE-2753
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2753
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: build
Affects Versions: 0.22.0
Environment: RHEL 6.1 & Ubuntu 11.04; Sun JDK 1.6_016 & Sun JDK 1.6.0_26; Ant 1.8.2
Reporter: Joep Rottinghuis


The generated poms inject the version of mapred itself, but hardcode the version of hadoop-common they depend on.
When trying to build downstream projects (HBase), then they will require hadoop-common-0.22.0-SNAPSHOT.jar instead of the version they compiled against.

When trying to do an offline build this will fail to resolve as another hadoop-common has been installed in the local maven repo.
Even during online build, it should compile against the hadoop-common that hdfs compiled against.

When versions mismatch one cannot do a coherent build. That is particularly problematic when making simultaneous change in hadoop-common and hadoop-mapreduce and you want to try this locally before committing each.

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postedJul 29, '11 at 5:37p
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