[jira] [Created] (BEAM-2814) test_as_singleton_with_different_defaults test is flaky

["Ahmet Altay (JIRA)" <ji...@apache.org>]

Ahmet Altay created BEAM-2814:
---------------------------------

             Summary: test_as_singleton_with_different_defaults test is flaky
                 Key: BEAM-2814
                 URL: https://issues.apache.org/jira/browse/BEAM-2814
             Project: Beam
          Issue Type: Bug
          Components: sdk-py
            Reporter: Ahmet Altay
            Priority: Critical


{{test_as_singleton_with_different_defaults}} is flaky and failed in the post commit test 3013, but there is no related change to trigger this.

https://builds.apache.org/view/A-D/view/Beam/job/beam_PostCommit_Python_Verify/3013/consoleFull
(https://pantheon.corp.google.com/dataflow/job/2017-08-28_11_08_56-17324181904913254210?project=apache-beam-testing)

Dataflow error form the console:
  (b4d390f9f9e033b4): Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/dataflow_worker/batchworker.py", line 582, in do_work
    work_executor.execute()
  File "/usr/local/lib/python2.7/dist-packages/dataflow_worker/executor.py", line 166, in execute
    op.start()
  File "apache_beam/runners/worker/operations.py", line 294, in apache_beam.runners.worker.operations.DoOperation.start (apache_beam/runners/worker/operations.c:10607)
    def start(self):
  File "apache_beam/runners/worker/operations.py", line 295, in apache_beam.runners.worker.operations.DoOperation.start (apache_beam/runners/worker/operations.c:10501)
    with self.scoped_start_state:
  File "apache_beam/runners/worker/operations.py", line 323, in apache_beam.runners.worker.operations.DoOperation.start (apache_beam/runners/worker/operations.c:10322)
    self.dofn_runner = common.DoFnRunner(
  File "apache_beam/runners/common.py", line 378, in apache_beam.runners.common.DoFnRunner.__init__ (apache_beam/runners/common.c:10018)
    self.do_fn_invoker = DoFnInvoker.create_invoker(
  File "apache_beam/runners/common.py", line 154, in apache_beam.runners.common.DoFnInvoker.create_invoker (apache_beam/runners/common.c:5212)
    return PerWindowInvoker(
  File "apache_beam/runners/common.py", line 219, in apache_beam.runners.common.PerWindowInvoker.__init__ (apache_beam/runners/common.c:7109)
    input_args, input_kwargs, [si[global_window] for si in side_inputs])
  File "/usr/local/lib/python2.7/dist-packages/apache_beam/transforms/sideinputs.py", line 63, in __getitem__
    _FilteringIterable(self._iterable, target_window), self._view_options)
  File "/usr/local/lib/python2.7/dist-packages/apache_beam/pvalue.py", line 332, in _from_runtime_iterable
    'PCollection with more than one element accessed as '
ValueError: PCollection with more than one element accessed as a singleton view.



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