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https://issues.apache.org/jira/browse/TOREE-430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16119632#comment-16119632
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ASF GitHub Bot commented on TOREE-430:
--------------------------------------
GitHub user Myllyenko opened a pull request:
https://github.com/apache/incubator-toree/pull/129
Fix for TOREE-430
To fix TOREE-430, REPL-generated classes must be made visible to a
classloader.
The only working way I found is to set the `spark.repl.class.outputDir`
system property (and subsequently the corresponding Spark configuration
property) to a path to an output directory of a REPL compiler. To achieve that,
I had to move `SparkIMain` initialisation before creation of `SparkContext`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Myllyenko/incubator-toree TOREE-430
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-toree/pull/129.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #129
----
commit 2de78a0c50237bd2166843fd89982022d45a41b0
Author: Igor Melnichenko <myllye...@ya.ru>
Date: 2017-08-04T11:11:13Z
Fixed TOREE-430 by setting the spark.repl.class.outputDir system property
to a path to an output directory of a REPL compiler in the Scala 2.10
environment.
(cherry picked from commit 72261a6eb9759b0f0cae89793fdac25976d10c48)
# Conflicts:
#
scala-interpreter/src/main/scala/org/apache/toree/kernel/interpreter/scala/ScalaInterpreter.scala
----
> ClassNotFoundException with lambdas on CDH 5.10.0
> -------------------------------------------------
>
> Key: TOREE-430
> URL: https://issues.apache.org/jira/browse/TOREE-430
> Project: TOREE
> Issue Type: Bug
> Components: Kernel
> Affects Versions: 0.1.0
> Environment: CDH 5.10.0 (Spark 1.6.0, Scala 2.10.5)
> Reporter: Igor Melnichenko
>
> In the specified environment, Toree classloader fails to load classes defined
> and compiled in REPL. For instance, the following Spark example fails with
> ClassNotFoundException and works fine if the lambda is removed:
> {code:title=Example.scala|borderStyle=solid}
> val NUM_SAMPLES = 100
> val count = sc.parallelize(1 to NUM_SAMPLES).filter { _ =>
> val x = math.random
> val y = math.random
> x*x + y*y < 1
> }.count()
> println(s"Pi is roughly ${4.0 * count / NUM_SAMPLES}")
> {code}
> Cause: a location of a directory used by a REPL compiler to store
> runtime-compiled classes is different from a location where classloader tries
> to find these classes.
> PR with fix will be opened soon.
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