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https://issues.apache.org/jira/browse/SPARK-5631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14311506#comment-14311506
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DeepakVohra commented on SPARK-5631:
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"This means you have mismatched Hadoop versions, either between your Spark and
Hadoop deployment, "
Hadoop version is hadoop-2.0.0-cdh4.2.0.tar.gz.
Spark binaries are compiled with the same version: spark-1.2.0-bin-cdh4.tgz
"or because you included Hadoop code in your app."
The Spark application is the RunRecommender application.
> Server IPC version 7 cannot communicate with client version 4
> ------------------------------------------------------------------
>
> Key: SPARK-5631
> URL: https://issues.apache.org/jira/browse/SPARK-5631
> Project: Spark
> Issue Type: Bug
> Components: Java API
> Affects Versions: 1.2.0
> Environment: Scala 2.10.4
> Spark 1.2
> CDH4.2
> Reporter: DeepakVohra
>
> A Spark application generates the error
> Server IPC version 7 cannot communicate with client version 4
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