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For warm/active DC case, we want to avoid cross-DC queries when the master is in another data center. We should cut down on master queries for this reason. Also, doing master queries on read makes the master a SPOF on read requests (not just write requests).

For warm/active DC case, we want to avoid cross-DC queries when the master is in another data center. We should cut down on master queries for this reason. Also, doing master queries on read makes the master a SPOF on read requests (not just write requests).

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