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https://issues.apache.org/jira/browse/FLINK-1637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14344918#comment-14344918
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Robert Metzger commented on FLINK-1637:
---------------------------------------
The issue is that Java 6 can not load jar files with more than 65536 files.
http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7191282
It seems that we've recently surpassed that number for our uberjar.
It contains 65868 files.
> Flink uberjar does not work with Java 6
> ---------------------------------------
>
> Key: FLINK-1637
> URL: https://issues.apache.org/jira/browse/FLINK-1637
> Project: Flink
> Issue Type: Bug
> Affects Versions: 0.9
> Environment: Java 6
> Reporter: Robert Metzger
> Assignee: Robert Metzger
> Priority: Critical
>
> Apparently the uberjar created by maven shade does not work with java 6
> {code}
> /jre1.6.0_45/bin/java -classpath
> flink-0.9-SNAPSHOT/lib/flink-dist-0.9-SNAPSHOT-yarn-uberjar.jar
> org.apache.flink.client.CliFrontend
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/flink/client/CliFrontend
> Caused by: java.lang.ClassNotFoundException:
> org.apache.flink.client.CliFrontend
> at java.net.URLClassLoader$1.run(Unknown Source)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> Could not find the main class: org.apache.flink.client.CliFrontend. Program
> will exit.
> {code}
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