satybald commented on pull request #15185:
URL: https://github.com/apache/beam/pull/15185#issuecomment-895579998
While running the pipeline with runner V2, I found that pipeline logs
significant amount of error i.e. 5K log lines per 5min in the end of the job.
```
apache_beam.runners.common.PerWindowInvoker.try_split File
"apache_beam/runners/common.py", line 1036,
in apache_beam.runners.common.PerWindowInvoker._try_split
File
"/usr/local/lib/python3.7/site-packages/apache_beam/runners/sdf_utils.py", line
124,
in try_split return
self._restriction_tracker.try_split(fraction_of_remainder)
File "/usr/local/lib/python3.7/site-packages/apache_beam/io/iobase.py", line
1519,
in try_split return self.restriction.try_split(fraction_of_remainder)
File "/usr/local/lib/python3.7/site-packages/apache_beam/io/iobase.py", line
1459, in
try_split position = self.range_tracker().position_at_fraction(fraction)
File
"/usr/local/lib/python3.7/site-packages/apache_beam/io/range_trackers.py", line
325, in position_at_fraction return
self._range_tracker.position_at_fraction(fraction)
File
"/usr/local/lib/python3.7/site-packages/apache_beam/io/range_trackers.py", line
199,
in position_at_fraction 'get_position_for_fraction_consumed is not
applicable for an
' Exception: get_position_for_fraction_consumed is not applicable for an
unbounded range
```

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