[jira] [Resolved] (SPARK-7042) Spark version of akka-actor_2.11 is not compatible with the official akka-actor_2.11 2.3.x

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-7042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-7042.
------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.0

Issue resolved by pull request 6341
[https://github.com/apache/spark/pull/6341]

> Spark version of akka-actor_2.11 is not compatible with the official akka-actor_2.11 2.3.x
> ------------------------------------------------------------------------------------------
>
>                 Key: SPARK-7042
>                 URL: https://issues.apache.org/jira/browse/SPARK-7042
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.3.1
>            Reporter: Konstantin Shaposhnikov
>            Priority: Minor
>             Fix For: 1.5.0
>
>
> When connecting to a remote Spark cluster (that runs Spark branch-1.3 built with Scala 2.11) from an application that uses akka 2.3.9 I get the following error:
> {noformat}
> 2015-04-22 09:01:38,924 - [WARN] - [akka.remote.ReliableDeliverySupervisor] [sparkDriver-akka.actor.default-dispatcher-5] -
> Association with remote system [akka.tcp://sparkExecutor@server:59007] has failed, address is now gated for [5000] ms.
> Reason is: [akka.actor.Identify; local class incompatible: stream classdesc serialVersionUID = -213377755528332889, local class serialVersionUID = 1].
> {noformat}
> It looks like akka-actor_2.11 2.3.4-spark that is used by Spark has been built using Scala compiler 2.11.0 that ignores SerialVersionUID annotations (see https://issues.scala-lang.org/browse/SI-8549).
> The following steps can resolve the issue:
> - re-build the custom akka library that is used by Spark with the more recent version of Scala compiler (e.g. 2.11.6) 
> - deploy a new version (e.g. 2.3.4.1-spark) to a maven repo
> - update version of akka used by spark (master and 1.3 branch)
> I would also suggest to upgrade to the latest version of akka 2.3.9 (or 2.3.10 that should be released soon).



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