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https://issues.apache.org/jira/browse/FLINK-7685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17321627#comment-17321627
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Flink Jira Bot commented on FLINK-7685:
---------------------------------------
This issue and all of its Sub-Tasks have not been updated for 180 days. So, it
has been labeled "stale-minor". If you are still affected by this bug or are
still interested in this issue, please give an update and remove the label. In
7 days the issue will be closed automatically.
> CompilerException: "Bug: Logic for branching plans (non-tree plans) has an
> error, and does not track the re-joining of branches correctly"
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-7685
> URL: https://issues.apache.org/jira/browse/FLINK-7685
> Project: Flink
> Issue Type: Bug
> Components: API / DataSet
> Reporter: Gábor Gévay
> Priority: Minor
> Labels: stale-minor
>
> A Flink program which reads an input DataSet, creates 64 new DataSets from
> it, and writes these to separate files throws the following exception:
> {code:java}
> Exception in thread "main" org.apache.flink.optimizer.CompilerException: Bug:
> Logic for branching plans (non-tree plans) has an error, and does not track
> the re-joining of branches correctly.
> at org.apache.flink.optimizer.Optimizer.compile(Optimizer.java:491)
> at org.apache.flink.optimizer.Optimizer.compile(Optimizer.java:398)
> at
> org.apache.flink.client.LocalExecutor.executePlan(LocalExecutor.java:187)
> at
> org.apache.flink.api.java.LocalEnvironment.execute(LocalEnvironment.java:91)
> at
> org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:921)
> at
> org.apache.flink.examples.java.wordcount.WordCount.main(WordCount.java:86)
> {code}
> Here is some code that reproduces it:
> https://github.com/ggevay/flink/tree/compiler-exception-new
> Note that it works with less than 64 DataSets.
> Also note that with more than 64 DataSets it throws {{CompilerException:
> Cannot currently handle nodes with more than 64 outputs}}, which is at least
> a clear error msg that helps the user to find a workaround.
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