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https://issues.apache.org/jira/browse/FLINK-1163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14170657#comment-14170657
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Aljoscha Krettek commented on FLINK-1163:
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Yes, the problem is that the closure of the main method gets included when a
local variable from there is used inside a user-code function.
> Scala DataSet cannot be used within iterations because it is not serializable
> -----------------------------------------------------------------------------
>
> Key: FLINK-1163
> URL: https://issues.apache.org/jira/browse/FLINK-1163
> Project: Flink
> Issue Type: Bug
> Reporter: Till Rohrmann
>
> The Scala iterations cannot deal with a Scala DataSet in its closure because
> it is not serializable.
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