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https://issues.apache.org/jira/browse/BEAM-8311?focusedWorklogId=318403&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-318403
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ASF GitHub Bot logged work on BEAM-8311:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 25/Sep/19 15:29
            Start Date: 25/Sep/19 15:29
    Worklog Time Spent: 10m 
      Work Description: markflyhigh commented on pull request #9655: 
[BEAM-8311] Cherry-pick Merge pull request #9601, #9656: Minor fix for python 
mongodbio display data
URL: https://github.com/apache/beam/pull/9655
 
 
   
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 318403)
    Time Spent: 50m  (was: 40m)

> Fix python mongodbio display data type
> --------------------------------------
>
>                 Key: BEAM-8311
>                 URL: https://issues.apache.org/jira/browse/BEAM-8311
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-py-core
>            Reporter: Yichi Zhang
>            Assignee: Yichi Zhang
>            Priority: Blocker
>             Fix For: 2.16.0
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> When I try to write document to mongodb through
>  | "Write User Doc to Mongo" >> beam.io.WriteToMongoDB(uri=MONGO_URI,
>                                                                db="dbname",
>                                                                coll="col_name"
>                                                                ))
> Error {{ValueError: Invalid DisplayDataItem. Value {} is of an unsupported 
> type.}}
>  ERROR:root:Error while visiting Write User Doc to Mongo/ParDo(_WriteMongoFn)
> Traceback (most recent call last):
>   File "beam_home.py", line 317, in <module>
>     run()
>   File "beam_home.py", line 312, in run
>     p.run().wait_until_finish()
>   File "/usr/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 
> 406, in run
>     self._options).run(False)
>   File "/usr/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 
> 419, in run
>     return self.runner.run_pipeline(self, self._options)
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/runners/dataflow/dataflow_runner.py",
>  line 469, in run_pipeline
>     super(DataflowRunner, self).run_pipeline(pipeline, options)
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 
> 158, in run_pipeline
>     pipeline.visit(RunVisitor(self))
>   File "/usr/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 
> 447, in visit
>     self._root_transform().visit(visitor, self, visited)
>   File "/usr/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 
> 824, in visit
>     part.visit(visitor, pipeline, visited)
>   File "/usr/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 
> 824, in visit
>     part.visit(visitor, pipeline, visited)
>   File "/usr/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 
> 827, in visit
>     visitor.visit_transform(self)
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 
> 153, in visit_transform
>     self.runner.run_transform(transform_node, options)
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 
> 196, in run_transform
>     return m(transform_node, options)
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/runners/dataflow/dataflow_runner.py",
>  line 807, in run_ParDo
>     transform_node.transform.output_tags)
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/runners/dataflow/dataflow_runner.py",
>  line 590, in _add_step
>     DisplayData.create_from(transform_node.transform).items])
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/transforms/display.py", 
> line 274, in get_dict
>     self.is_valid()
>   File 
> "/usr/local/lib/python2.7/site-packages/apache_beam/transforms/display.py", 
> line 246, in is_valid
>     .format(self.value))
> ValueError: Invalid DisplayDataItem. Value {} is of an unsupported type.
>  



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