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https://issues.apache.org/jira/browse/SPARK-2420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14056756#comment-14056756
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Sean Owen commented on SPARK-2420:
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Yes, you don't want two versions of the servlet API loaded at once, in fact you
can't in one classloader. But 3.0 works for any library that links against 2.5.
You exclude 2.5; I'm not clear if that's what you tried. It is not a library,
it's an API. I realize that doesn't go for every library out there, but am
saying you should investigate whether these are actually problems or not. Ping
me offline as I've seen these already come up and be solved here.
> Change Spark build to minimize library conflicts
> ------------------------------------------------
>
> Key: SPARK-2420
> URL: https://issues.apache.org/jira/browse/SPARK-2420
> Project: Spark
> Issue Type: Wish
> Components: Build
> Affects Versions: 1.0.0
> Reporter: Xuefu Zhang
> Attachments: spark_1.0.0.patch
>
>
> During the prototyping of HIVE-7292, many library conflicts showed up because
> Spark build contains versions of libraries that's vastly different from
> current major Hadoop version. It would be nice if we can choose versions
> that's in line with Hadoop or shading them in the assembly. Here are the wish
> list:
> 1. Upgrade protobuf version to 2.5.0 from current 2.4.1
> 2. Shading Spark's jetty and servlet dependency in the assembly.
> 3. guava version difference. Spark is using a higher version. I'm not sure
> what's the best solution for this.
> The list may grow as HIVE-7292 proceeds.
> For information only, the attached is a patch that we applied on Spark in
> order to make Spark work with Hive. It gives an idea of the scope of changes.
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