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https://issues.apache.org/jira/browse/FLINK-1390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16058708#comment-16058708
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Erik van Oosten commented on FLINK-1390:
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See
https://issues.apache.org/jira/browse/FLINK-5633?focusedCommentId=16058706&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16058706
for a proper solution.
> java.lang.ClassCastException: X cannot be cast to X
> ----------------------------------------------------
>
> Key: FLINK-1390
> URL: https://issues.apache.org/jira/browse/FLINK-1390
> Project: Flink
> Issue Type: Bug
> Components: YARN
> Affects Versions: 0.8.0
> Reporter: Robert Metzger
> Assignee: Robert Metzger
>
> A user is affected by an issue, which is probably caused by different
> classloaders being used for loading user classes.
> Current state of investigation:
> - the error happens in yarn sessions (there is only a YARN environment
> available)
> - the error doesn't happen on the first time the job is being executed. It
> only happens on subsequent executions.
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