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https://issues.apache.org/jira/browse/SPARK-7841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14997489#comment-14997489
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Apache Spark commented on SPARK-7841:
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User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/9575
> Spark build should not use lib_managed for dependencies
> -------------------------------------------------------
>
> Key: SPARK-7841
> URL: https://issues.apache.org/jira/browse/SPARK-7841
> Project: Spark
> Issue Type: Bug
> Components: Build
> Affects Versions: 1.3.1
> Reporter: Iulian Dragos
> Labels: easyfix, sbt
>
> - unnecessary duplication (I will have those libraries under ./m2, via maven
> anyway)
> - every time I call make-distribution I lose lib_managed (via mvn clean
> install) and have to wait to download again all jars next time I use sbt
> - Eclipse does not handle relative paths very well (source attachments from
> lib_managed don’t always work)
> - it's not the default configuration. If we stray from defaults I think there
> should be a clear advantage.
> Digging through history, the only reference to `retrieveManaged := true` I
> found was in f686e3d, from July 2011 ("Initial work on converting build to
> SBT 0.10.1"). My guess this is purely an accident of porting the build form
> Sbt 0.7.x and trying to keep the old project layout.
> If there are reasons for keeping it, please comment (I didn't get any answers
> on the [dev mailing
> list|http://apache-spark-developers-list.1001551.n3.nabble.com/Why-use-quot-lib-managed-quot-for-the-Sbt-build-td12361.html])
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