Brian Hulette created BEAM-8884:
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Summary: Python MongoDBIO TypeError when splitting
Key: BEAM-8884
URL: https://issues.apache.org/jira/browse/BEAM-8884
Project: Beam
Issue Type: Bug
Components: sdk-py-core
Reporter: Brian Hulette
>From [slack|https://the-asf.slack.com/archives/CBDNLQZM1/p1575350991134000]:
I am trying to run a pipeline (defined with the Python SDK) on Dataflow that
uses beam.io.ReadFromMongoDB. When dealing with very small datasets (<10mb) it
runs fine, when trying to run it with slightly larger datasets (70mb), I always
get this error:
{code:}
TypeError: '<' not supported between instances of 'dict' and 'ObjectId'
{code}
Stack trace see below. Running it on a local machine works just fine. I would
highly appreciate any pointers what this could be.
I hope this is the right channel do address this.
{code:}
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/dataflow_worker/batchworker.py",
line 649, in do_work
work_executor.execute()
File "/usr/local/lib/python3.7/site-packages/dataflow_worker/executor.py",
line 218, in execute
self._split_task)
File "/usr/local/lib/python3.7/site-packages/dataflow_worker/executor.py",
line 226, in _perform_source_split_considering_api_limits
desired_bundle_size)
File "/usr/local/lib/python3.7/site-packages/dataflow_worker/executor.py",
line 263, in _perform_source_split
for split in source.split(desired_bundle_size):
File "/usr/local/lib/python3.7/site-packages/apache_beam/io/mongodbio.py",
line 174, in split
bundle_end = min(stop_position, split_key_id)
TypeError: '<' not supported between instances of 'dict' and 'ObjectId'
{code}
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