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Type: Bug
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Resolution: Done
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Priority: Major - P3
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Affects Version/s: None
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Component/s: None
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None
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Fully Compatible
PyMongo ought to include $readPreference in "secondary-ok" command documents sent to mongos, but in the unreleased PyMongo 3 code it does not.
A fix should likely wait for command handling to be slightly refactored in PYTHON-857 first.