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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-6775) Fix MapReduce failures caused by default RPC engine changing
Date Wed, 07 Sep 2016 20:53:20 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-6775?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kai Zheng updated MAPREDUCE-6775:
---------------------------------
    Status: Patch Available  (was: Open)

> Fix MapReduce failures caused by default RPC engine changing
> ------------------------------------------------------------
>
>                 Key: MAPREDUCE-6775
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6775
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>         Attachments: MAPREDUCE-6775-v1.patch
>
>
> HADOOP-13218 changed the default RPC engine, which isn't inappropriate because MAPREDUCE-6706
isn't solved yet, supporting TaskUmbilicalProtocol to use ProtobufRPCEngine.
> [~jlowe] reported the following errors:
> {noformat}
> 2016-09-07 17:51:56,296 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception running
child : java.lang.reflect.UndeclaredThrowableException
> 	at com.sun.proxy.$Proxy10.getTask(Unknown Source)
> 	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:137)
> Caused by: com.google.protobuf.ServiceException: Too many or few parameters for request.
Method: [getTask], Expected: 2, Actual: 1
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:199)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
> 	... 2 more
> {noformat}



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