riteshghorse opened a new issue, #30543: URL: https://github.com/apache/beam/issues/30543
### What happened? Python unit tests are failing continuously pointing to this one test ([Sample run](https://github.com/apache/beam/actions/runs/8174287259/job/22348940544?pr=30388))- <img width="782" alt="image" src="https://github.com/apache/beam/assets/25881114/cf31a4dd-8d11-418a-b62c-8353db540a2a";> with error: ``` [gw3] linux -- Python 3.11.8 /runner/_work/beam/beam/sdks/python/test-suites/tox/py311/build/srcs/sdks/python/target/.tox-py311/py311/bin/python self = <apache_beam.yaml.readme_test.ReadMeTest testMethod=test_line_610> def test(self): with TestEnvironment() as env: nonlocal test_yaml test_yaml = test_yaml.replace('/path/to/*.tsv', env.input_tsv()) > spec = yaml.load(test_yaml, Loader=SafeLoader) target/.tox-py311/py311/lib/python3.11/site-packages/apache_beam/yaml/readme_test.py:203: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ target/.tox-py311/py311/lib/python3.11/site-packages/yaml/__init__.py:81: in load return loader.get_single_data() target/.tox-py311/py311/lib/python3.11/site-packages/yaml/constructor.py:49: in get_single_data node = self.get_single_node() target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:36: in get_single_node document = self.compose_document() target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:55: in compose_document node = self.compose_node(None, None) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:84: in compose_node node = self.compose_mapping_node(anchor) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:133: in compose_mapping_node item_value = self.compose_node(node, item_key) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:84: in compose_node node = self.compose_mapping_node(anchor) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:133: in compose_mapping_node item_value = self.compose_node(node, item_key) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:82: in compose_node node = self.compose_sequence_node(anchor) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:111: in compose_sequence_node node.value.append(self.compose_node(node, index)) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:84: in compose_node node = self.compose_mapping_node(anchor) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:133: in compose_mapping_node item_value = self.compose_node(node, item_key) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:84: in compose_node node = self.compose_mapping_node(anchor) target/.tox-py311/py311/lib/python3.11/site-packages/yaml/composer.py:127: in compose_mapping_node while not self.check_event(MappingEndEvent): target/.tox-py311/py311/lib/python3.11/site-packages/yaml/parser.py:98: in check_event self.current_event = self.state() target/.tox-py311/py311/lib/python3.11/site-packages/yaml/parser.py:428: in parse_block_mapping_key if self.check_token(KeyToken): target/.tox-py311/py311/lib/python3.11/site-packages/yaml/scanner.py:115: in check_token while self.need_more_tokens(): target/.tox-py311/py311/lib/python3.11/site-packages/yaml/scanner.py:152: in need_more_tokens self.stale_possible_simple_keys() _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <yaml.loader.SafeLoader object at 0x7c84ca035510> def stale_possible_simple_keys(self): # Remove entries that are no longer possible simple keys. According to # the YAML specification, simple keys # - should be limited to a single line, # - should be no longer than 1024 characters. # Disabling this procedure will allow simple keys of any length and # height (may cause problems if indentation is broken though). for level in list(self.possible_simple_keys): key = self.possible_simple_keys[level] if key.line != self.line \ or self.index-key.index > 1024: if key.required: > raise ScannerError("while scanning a simple key", key.mark, "could not find expected ':'", self.get_mark()) E yaml.scanner.ScannerError: while scanning a simple key E in "<unicode string>", line 9, column 5: E ... E ^ E could not find expected ':' E in "<unicode string>", line 10, column 5: E - type: WriteToPubSub E ^ target/.tox-py311/py311/lib/python3.11/site-packages/yaml/scanner.py:291: ScannerError ``` ### Issue Priority Priority: 2 (default / most bugs should be filed as P2) ### Issue Components - [X] Component: Python SDK - [ ] Component: Java SDK - [ ] Component: Go SDK - [ ] Component: Typescript SDK - [ ] Component: IO connector - [X] Component: Beam YAML - [ ] Component: Beam examples - [ ] Component: Beam playground - [ ] Component: Beam katas - [ ] Component: Website - [ ] Component: Spark Runner - [ ] Component: Flink Runner - [ ] Component: Samza Runner - [ ] Component: Twister2 Runner - [ ] Component: Hazelcast Jet Runner - [ ] Component: Google Cloud Dataflow Runner -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. 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