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https://issues.apache.org/jira/browse/SPARK-12223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Adkins updated SPARK-12223:
-------------------------------
Priority: Major (was: Blocker)
Summary: Warn users if Spark 1.5 is run on JRE6 (was: Spark 1.5 pre-bulit
releases don't work with the java version shipped with Macs)
If Spark 1.5 requires Java 7, then I think there a couple of issues:
1. Refix SPARK-1703 and give a better indication that a newer version of Java
is needed. ClassNotFoundException gives no hint what the true problem is.
2. Document the requirement on the download page and in the quick start
instructions. I never saw anything about Java 7 there, nor was the new
requirement mentioned in the 1.5.0 release notes.
I suspect many Mac OS X users will run into this, because Apple was shipping a
Java 6 JRE as recently as a year ago.
> Warn users if Spark 1.5 is run on JRE6
> --------------------------------------
>
> Key: SPARK-12223
> URL: https://issues.apache.org/jira/browse/SPARK-12223
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.5.0, 1.5.1, 1.5.2
> Environment: $ uname -a
> Darwin grixis 14.5.0 Darwin Kernel Version 14.5.0: Tue Sep 1 21:23:09 PDT
> 2015; root:xnu-2782.50.1~1/RELEASE_X86_64 x86_64
> $ java -version
> java version "1.6.0_65"
> Java(TM) SE Runtime Environment (build 1.6.0_65-b14-466.1-11M4716)
> Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-466.1, mixed mode)
> Reporter: Dan Adkins
>
> I downloaded the latest release (1.5.2) from
> [http://spark.apache.org/downloads.html] and attempted to execute step 1 of
> the Python quick start guide
> [http://spark.apache.org/docs/latest/quick-start.html].
> $ ./bin/pyspark
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/spark/launcher/Main
> Caused by: java.lang.ClassNotFoundException: org.apache.spark.launcher.Main
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> This looks similar to SPARK-1703 which is caused by attempting to run a Java7
> jar with JRE 6. I reproduced the problem with all of the 1.5.x releases. This
> problem doesn't exist for me in version 1.4.1.
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