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https://issues.apache.org/jira/browse/SPARK-5631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-5631.
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Resolution: Not a Problem
The right place to ask questions and discuss this is the mailing list. This
means you have mismatched Hadoop versions, either between your Spark and Hadoop
deployment, or because you included Hadoop code in your app.
> 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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