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https://issues.apache.org/jira/browse/SPARK-12807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15133045#comment-15133045
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Marcelo Vanzin commented on SPARK-12807:
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bq. I don't think we can park at 2.2.x. Spark already uses 2.5
That could be done just for the shuffle service. (Also, to be fair, Spark
compiles and works fine with 2.2.x.)
But either solution is fine.
> Spark External Shuffle not working in Hadoop clusters with Jackson 2.2.3
> ------------------------------------------------------------------------
>
> Key: SPARK-12807
> URL: https://issues.apache.org/jira/browse/SPARK-12807
> Project: Spark
> Issue Type: Bug
> Components: Shuffle, YARN
> Affects Versions: 1.6.0
> Environment: A Hadoop cluster with Jackson 2.2.3, spark running with
> dynamic allocation enabled
> Reporter: Steve Loughran
> Priority: Critical
>
> When you try to try to use dynamic allocation on a Hadoop 2.6-based cluster,
> you get to see a stack trace in the NM logs, indicating a jackson 2.x version
> mismatch.
> (reported on the spark dev list)
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