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apogre opened this issue May 24, 2023 · 2 comments · Fixed by #664
Closed

Error executing multiprocessing example #578

apogre opened this issue May 24, 2023 · 2 comments · Fixed by #664
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@bednar
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1.46.0

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@apogre
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apogre commented May 24, 2023

examples/import_data_set_multiprocessing.py

https://github.com/influxdata/influxdb-client-python/blob/master/examples/import_data_set_multiprocessing.py

Error executing multiprocessing example are reactivex upgrade.

 Unexpected error: 'Future' object is not iterable
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/reactivex/observable/observable.py", line 125, in set_disposable
    subscriber = self._subscribe_core(auto_detach_observer, scheduler)
  File "/usr/local/lib/python3.9/site-packages/reactivex/observable/observable.py", line 49, in _subscribe_core
    return self._subscribe(observer, scheduler) if self._subscribe else Disposable()
  File "/usr/local/lib/python3.9/site-packages/reactivex/observable/fromiterable.py", line 31, in subscribe
    iterator = iter(iterable)
TypeError: 'Future' object is not iterable
@mecod
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mecod commented Jul 26, 2024 •
edited
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Same error.
After change
ops.flat_map(lambda rows: executor.submit(parse_rows, rows, content_length)))
to
ops.map(lambda rows: executor.submit(parse_rows, rows, content_length)))
it works now.

Reference
FlatMap — transform the items emitted by an Observable into Observables, then flatten the emissions from those into a single Observable
Map — transform the items emitted by an Observable by applying a function to each item

@bednar
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bednar commented Jul 26, 2024

@mecod, @apogre thanks for report this. We will take a look.

@bednar bednar assigned bednar and unassigned karel-rehor Aug 12, 2024
@bednar bednar mentioned this issue Aug 12, 2024
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@bednar bednar added this to the 1.46.0 milestone Aug 12, 2024
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fix: multiprocessing example influxdata/influxdb-client-python
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@mecod @bednar @apogre @karel-rehor