Patrick Wendell created SPARK-1703:
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Summary: 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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