Potential stall in fast looping lookup join child/loop query in multi channel setup.

Description

A local lookup join activity in a child query could restart and reset an atomic used for channel synchronization after the others had started using it.
This would cause the synchronization mechanism to go out of a sync and cause a stall.

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Created November 29, 2016 at 11:49 AM
Updated November 30, 2016 at 4:10 PM
Resolved November 30, 2016 at 4:10 PM