Github user fhueske commented on the pull request:
https://github.com/apache/flink/pull/202#issuecomment-72640916
Just implemented the basic triangle enumeration job and figured out that
this example is already included in this PR ;-)
However, when trying to run both programs, I encountered two problems:
1. I had to manually create a file `/tmp/flink_data/output` and give it a
certain size (100MB worked for me). I'm on OS X.
2. After I had that file, the ./pyflink2.sh command did not print any error
message but did not respond either. Seemed kind of deadlocked.
The error message for the missing file was not really helpful and could be
improved.
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