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From "Konstantin Shaposhnikov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-7042) Spark version of akka-actor_2.11 is not compatible with the official akka-actor_2.11 2.3.x
Date Wed, 27 May 2015 00:07:18 GMT

    [ https://issues.apache.org/jira/browse/SPARK-7042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14560181#comment-14560181
] 

Konstantin Shaposhnikov commented on SPARK-7042:
------------------------------------------------

It looks like akka-zeromq_2.11 is only available for versions 2.3.7+, though the rest of the
akka libraries are available for 2.3.4.

I wonder if akka version can just be updated to the latest 2.3.11?

> 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
>            Assignee: 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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