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https://issues.apache.org/jira/browse/SPARK-1703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Patrick Wendell resolved SPARK-1703.
------------------------------------
Resolution: Fixed
Issue resolved by pull request 627
[https://github.com/apache/spark/pull/627]
> Warn users if Spark is run on JRE6 but compiled with JDK7
> ---------------------------------------------------------
>
> Key: SPARK-1703
> URL: https://issues.apache.org/jira/browse/SPARK-1703
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: Patrick Wendell
> Priority: Blocker
> Fix For: 1.0.0
>
>
> Right now since the JRE silently swallows the invalid jar, it will produce
> really confusing behavior if users hit this. We should check if we are in
> this situation (either in spark-class or compute-classpath) and fail with an
> explicit error.
> We can do something like:
> {code}
> $JAVA_HOME/bin/jar -tf lib/spark-assembly-1.0.0-SNAPSHOT-hadoop1.0.4.jar
> org/apache/spark/SparkContext
> {code}
> Which, when a user is running with JRE 6 and a JDK-7-compiled jar will
> produce:
> {code}
> java.util.zip.ZipException: invalid CEN header (bad signature)
> at java.util.zip.ZipFile.open(Native Method)
> at java.util.zip.ZipFile.<init>(ZipFile.java:132)
> at java.util.zip.ZipFile.<init>(ZipFile.java:93)
> at sun.tools.jar.Main.list(Main.java:997)
> at sun.tools.jar.Main.run(Main.java:242)
> at sun.tools.jar.Main.main(Main.java:1167)
> {code}
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