Github user nchammas commented on the pull request:
https://github.com/apache/spark/pull/6492#issuecomment-111157597
@kostya-sh @zsxwing - I was using [Maven
3.2.5](https://github.com/databricks/spark-perf/blob/8a966c48ec84a60bd8b139e684d8da63c8d43e0f/bin/spark-ec2/install-maven#L5).
Lemme try with 3.3 and confirm that that fixes things.
The top level error was this:
```
15/06/09 17:02:10 ERROR ActorSystemImpl: Uncaught fatal error from thread
[sparkDriver-akka.remote.default-remote-dispatcher-6] shutting down ActorSystem
[sparkDriver]
java.lang.VerifyError: class akka.remote.WireFormats$AkkaControlMessage
overrides final method getUnknownFields.()Lcom/google/protobuf/UnknownFieldSet;
...
15/06/09 17:02:20 ERROR SparkContext: Error initializing SparkContext.
java.util.concurrent.TimeoutException: Futures timed out after [10000
milliseconds]
```
@srowen - Do you want to start a discussion on the dev list about both
requiring Maven 3.3 and dropping Hadoop 1 support (perhaps in separate threads)?
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