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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12197) Do the HDFS dist stitching in hadoop-hdfs-project
Date Tue, 25 Jul 2017 23:48:00 GMT
Andrew Wang created HDFS-12197:
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             Summary: Do the HDFS dist stitching in hadoop-hdfs-project
                 Key: HDFS-12197
                 URL: https://issues.apache.org/jira/browse/HDFS-12197
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: build
    Affects Versions: 3.0.0-alpha4
            Reporter: Andrew Wang


Problem reported by [~lars_francke] on HDFS-11596. We can no longer easily start a namenode
and datanode from the source directory without doing a full build per the wiki instructions:
https://wiki.apache.org/hadoop/HowToSetupYourDevelopmentEnvironment

This is because we don't have a top-level dist for HDFS. $HADOOP_YARN_HOME for instance can
be set to {{hadoop-yarn-project/target}}, but $HADOOP_HDFS_HOME goes into the submodule: {{hadoop-hdfs-project/hadoop-hdfs/target}}.
This means it's missing the files from the sibling hadoop-hdfs-client module (which is required
by the namenode), but also other siblings like nfs and httpfs.

So, I think the right fix is doing the dist stitching at the {{hadoop-hdfs-project}} level
where we can aggregate all the child modules, and pointing $HADOOP_HDFS_HOME at this directory.



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