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Posted to issues@spark.apache.org by "Kohki Nishio (JIRA)" <ji...@apache.org> on 2017/02/21 07:10:44 UTC
[jira] [Reopened] (SPARK-19675) ExecutorClassLoader loads classes
from SystemClassLoader
[ https://issues.apache.org/jira/browse/SPARK-19675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kohki Nishio reopened SPARK-19675:
----------------------------------
SBT can manage 2.11 applications, an applicaiton runs completely with 2.11 binary however SBT is built on top of 2.10.
If application handles ClassLoaders properly, the sbt-launch jar will never cause a problem, however this is an issue inside ExecutorClassLoader implementation.
> ExecutorClassLoader loads classes from SystemClassLoader
> --------------------------------------------------------
>
> Key: SPARK-19675
> URL: https://issues.apache.org/jira/browse/SPARK-19675
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.1.0, 2.2.0
> Environment: sbt / Play Framework
> Reporter: Kohki Nishio
> Priority: Minor
>
> Spark Executor loads classes from SystemClassLoader which contains sbt-launch.jar and it contains Scala2.10 binary, however Spark itself is built on Scala2.11, thus it's throwing InvalidClassException
> java.io.InvalidClassException: scala.Option; local class incompatible: stream classdesc serialVersionUID = -114498752079829388, local class serialVersionUID = 5081326844987135632
> at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:616)
> at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1630)
> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1521)
> at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1630)
> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1521)
> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1781)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)
> at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942)
> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)
> ExecutorClassLoader's desired class loder (parentLoader) actually contains the correct path (scala-library-2.11.8.jar) but it is not being used.
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