[jira] [Created] (BEAM-8814) --no_auth flag is boolean type and is misleading

["David Song (Jira)" <ji...@apache.org>]

David Song created BEAM-8814:
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             Summary: --no_auth flag is boolean type and is misleading
                 Key: BEAM-8814
                 URL: https://issues.apache.org/jira/browse/BEAM-8814
             Project: Beam
          Issue Type: Bug
          Components: sdk-py-harness
    Affects Versions: 2.16.0, 2.15.0, 2.14.0
         Environment: Python2, Python3
            Reporter: David Song
             Fix For: 2.16.0, 2.15.0, 2.14.0


Pipeline options defines a [no_auth|[https://github.com/apache/beam/blob/master/sdks/python/apache_beam/options/pipeline_options.py#L468]] flag that is type=bool. This type is known to be ambiguous because it will expect a value, but anything passed to it will be considered True. For example, passing in "--no_auth=False" would still evaluate to True. We should instead use action="store_true" which only detects whether the flag is passed or not. 

Furthermore, [PipelineOptions.from_dictionary|[https://github.com/apache/beam/blob/master/sdks/python/apache_beam/options/pipeline_options.py#L229]] will assume that boolean flags are passed in without values (e.g. passing --no_auth, instead of --no_auth=True). This, combined with type=bool failing without a value, will ensure that it always fails. 

sdk_worker_main is the only place that uses from_dictionary (aside from tests), and it will crash if no_auth flag is passed. Looking at pipeline_options_test, tests that call [from_dictionary|[https://github.com/apache/beam/blob/master/sdks/python/apache_beam/options/pipeline_options_test.py#L218]] will feed in get_all_options, which means it have intended to only be used for serializing/deserializing flag options.

So from here, to support the no_auth flag:
 * we change no_auth so that it is action="store_true", or
 * we change sdk_worker_main so that it does not use from_dictionary

Or both.



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