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https://issues.apache.org/jira/browse/SPARK-5631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14308475#comment-14308475
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DeepakVohra commented on SPARK-5631:
------------------------------------

The Spark is built with Hadoop 2.0
spark-assembly-1.2.0-hadoop2.0.0-mr1-cdh4.2.0.jar

The Hadoop server is also Hadoop 2.0
hadoop-2.0.0-cdh4.6.0

Still getting the error
org.apache.hadoop.ipc.RemoteException: Server IPC version 7 cannot communicate 
with 
client version 4

The same version hadoop2.0.0-mr1-cdh4.2.0 as server also generates the error
Server IPC version 7 cannot communicate with 
client version 4

> 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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