[arvados] Triggering Keep garbage collection

[George Chlipala]

Is a way to trigger the keep data manager to perform garbage collection or
if it is possible to know/modify the garbage collection cycle?

We were performing a deletion test from within arvados to see if the keep
would delete blocks that are no longer used.  We had uploaded new data and
saw that the disk usage for the keep store had increased by 8GB.  However,
when we deleted the collection from the arvados workbench, we did not see
the disk usage decrease by the same amount.  Between the adding and
deletion we did not upload any additional data that might reference the new
blocks as well, so I would expect that the keep store should release that
space.

Any help in this matter would be greatly appreciated.

Thanks!

George Chlipala, Ph.D.
Senior Research Specialist
Research Resources Center
University of Illinois at Chicago

phone: 312-413-1700
email: gchlip2 at uic.edu
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