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https://issues.apache.org/jira/browse/BEAM-14330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on BEAM-14330 started by Ning.
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> google.api_core.exceptions.MethodNotImplemented when tests run in parallel
> --------------------------------------------------------------------------
>
> Key: BEAM-14330
> URL: https://issues.apache.org/jira/browse/BEAM-14330
> Project: Beam
> Issue Type: Improvement
> Components: runner-py-interactive
> Reporter: Ning
> Assignee: Ning
> Priority: P2
>
> An error is thrown when tests run in parallel for interactive modules.
> >google.api_core.exceptions.MethodNotImplemented: 501 Received http2 header
> >with status: 404
>
> The cause is shared global singleton among tests: a cluster related test
> registers a cluster manager in the global state while a non-cluster test
> cleans up the global state without necessary mocking.
> The solution should be mock the global singleton in tests to isolate tests
> from each other.
> To reproduce the failure (note: parallel execution is non-deterministic), add
> something like '-n 5' when executing pytests.
> For example:
> >pytest -n 5 apache_beam/runners/interactive/interactive_runner_test.py
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