Query-retrieve operations need their own queue
Issue #326 resolved
The C-Find and C-Move operations can take a long while, and can block the resulting extractions from being processed till the move is complete.
Propose a new qr queue to join the stores and default queues.
Also currently a move called from a query is not sent to Celery, but rather continues in the parent's task. Propose breaking this into a new task.
Implemented the changes proposed in ref
#326. Need to change documentation to reflect this before closing task.
→ <<cset 4cff4df16e85>>
Removed references to specific qr queue again after changing prefetch to 1, as separate qr queue should no longer be necessary. Refs
→ <<cset 1164cf67f034>>
Resolved back in December. Would only useful if several queries are taking place at once and took all available workers.