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  1. Flink
  2. FLINK-25207

sample pyflink from documentation doesn't work in jupyter notebooks

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Duplicate
    • 1.14.0
    • None
    • API / Python
    • None
    • Windows 3.10

      new conda environment, python = 3.8

      pip install apache-flink notebook kafka-python

    Description

      copy/pasted the tutorial from this page:
      https://nightlies.apache.org/flink/flink-docs-release-1.14/docs/dev/python/datastream_tutorial/

      into a new cell of a new notebook.

      called word_count(None, None)

      output cell was:
       

      Executing word_count example with default input data set.
      Use --input to specify file input.
      Printing result to stdout. Use --output to specify output path.
      Exception in thread Thread-22:
      Traceback (most recent call last):
        File "E:\dev\Conda\envs\py38\lib\threading.py", line 932, in _bootstrap_inner
          self.run()
        File "E:\dev\Conda\envs\py38\lib\site-packages\apache_beam\runners\worker\data_plane.py", line 218, in run
          while not self._finished.wait(next_call - time.time()):
        File "E:\dev\Conda\envs\py38\lib\threading.py", line 558, in wait
          signaled = self._cond.wait(timeout)
        File "E:\dev\Conda\envs\py38\lib\threading.py", line 306, in wait
          gotit = waiter.acquire(True, timeout)
      OverflowError: timeout value is too large
      

      In the command line where the notebook was started, the output of the job was printed:

       

      WARNING: All illegal access operations will be denied in a future release
      +I[To, 1]
      +I[be,, 1]
      etc.

       
      If not easily fixable, maybe a mention that this doesn't work well in notebooks could be useful, considering how prevalent an environment they are.
       

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              Unassigned Unassigned
              Nakram Stephan Pirson
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                Created:
                Updated:
                Resolved: