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https://issues.apache.org/jira/browse/HADOOP-6200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747461#action_12747461
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Steve Loughran commented on HADOOP-6200:
----------------------------------------
Actually, it turns out to really be a cycle. the hadoop-hdfs.init target
requires hadoop-mapred to exist, because it unzips the webapps.
<unzip src="${lib.dir}/hadoop-mapred-${hadoop-mr.version}.jar"
dest="${build.dir}">
<patternset>
<include name="webapps/**"/>
</patternset>
</unzip>
_you cannot build hdfs without mapred, you cannot build mapred without hdfs_
Therefore, the graph of build dependencies is not technically acyclic.
> glue together the different projects to make local builds easier
> ----------------------------------------------------------------
>
> Key: HADOOP-6200
> URL: https://issues.apache.org/jira/browse/HADOOP-6200
> Project: Hadoop Common
> Issue Type: Bug
> Components: build
> Affects Versions: 0.21.0
> Reporter: Steve Loughran
> Priority: Minor
>
> It's currently fairly tricky to get everything building/up to date in a
> single machine. We can and should improve this.
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