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由 Sambitesh Dash 提交于
When ON, ORCA will optimize DML queries by enforcing a non-master gather whenever possible. When off, a gather on master will be enforced instead. Default value will be ON. Also add new tests to ensure sane behavior when this optimization is turned on and fix the existing tests. Signed-off-by: NSambitesh Dash <sdash@pivotal.io> Signed-off-by: NDhanashree Kashid <dkashid@pivotal.io>
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