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https://issues.apache.org/jira/browse/CASSANDRA-10128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14703215#comment-14703215
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Joshua McKenzie commented on CASSANDRA-10128:
---------------------------------------------

This appears to be due to a bug in Python's multiprocessing package on Windows: 
[link|https://bugs.python.org/issue10128]. This is fixed in 
[3.2|https://bugs.python.org/issue10845] but hasn't been backported.

Rather than us running a custom patched version of python on our ci boxes, I'm 
going to put in a PR to skip the MV tests for now until we can revisit them to 
work around this problem.

> Windows dtest 3.0: consistent_reads_after_write_test 
> (materialized_views_test.TestMaterializedViewsConsistency) timing out
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10128
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10128
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Joshua McKenzie
>            Assignee: Joshua McKenzie
>              Labels: Windows
>             Fix For: 3.0.x
>
>
> Test times out and also throws errors, ending in:
> {noformat}
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "C:\Python27\lib\multiprocessing\forking.py", line 380, in main
> On 0; match: 0; extra: 0; missing: 0    prepare(preparation_data)
>   File "C:\Python27\lib\multiprocessing\forking.py", line 488, in prepare
>     assert main_name not in sys.modules, main_name
> AssertionError: __main__
> {noformat}
> Reproducible locally, happening on CI as well



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