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epriestley 78ab675bd8 After a Drydock lease triggers a resource to be reclaimed, stop it from triggering another reclaim until the first one completes
Summary:
Depends on D19752. Ref T13210. If resources take a long time to reclaim/destroy (normally, more than 15 seconds) a single new lease may update several times during the reclaim/destroy process and end up reclaiming multiple resources.

Instead: after a lease triggers a reclaim, prevent it from triggering another reclaim as long as the resource it is reclaiming hasn't finished its reclaim/destroy cycle. Basically, each lease only gets to destroy one resource at a time.

Test Plan:
  - Added a `sleep(120)` to `destroyResource()` to simulate a long reclaim/destroy cycle.
  - Allocated A, A, A working copies. Leased a B working copy.
  - Before patch: saw "B" lease destroy all three "A" working copies after ~0, ~15, and ~30 seconds, then build a new "B" resource after ~120 seconds (when the first reclaim/destroy finished).
  - After patch: saw "B" lease destroy one "A" working copy after ~0 seconds, then wait patiently until it finished up, then build a new "B" resource.

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13210

Differential Revision: https://secure.phabricator.com/D19753
2018-10-26 06:11:05 -07:00
bin Add a "lock log" for debugging where locks are being held 2018-03-05 17:55:34 -08:00
conf Support "ssl.chain" in Aphlict configuration 2016-04-14 10:41:21 -07:00
externals Add profile images to Repositories 2017-06-12 07:51:39 -07:00
resources When a Drydock lease schedules a resource to be reclaimed, awaken the lease update task when the reclaim completes 2018-10-26 06:09:52 -07:00
scripts Remove outdated "rebuild_summaries.php" script 2018-09-06 08:18:47 -07:00
src After a Drydock lease triggers a resource to be reclaimed, stop it from triggering another reclaim until the first one completes 2018-10-26 06:11:05 -07:00
support Append the intermediate chain to the "cert" parameter in Aphlict 2018-06-26 19:34:28 +00:00
webroot Add an explicit "max-width" to PHUIDocumentPro pages to force large tables to scroll 2018-10-01 13:15:59 -07:00
.arcconfig Set "history.immutable" to "false" explicitly in .arcconfig 2016-08-03 08:12:49 -07:00
.arclint Begin adding test coverage to GitHub Events API parsers 2016-03-09 09:30:07 -08:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig
.gitignore Make i18n string extraction faster and more flexible 2016-07-04 10:23:30 -07:00
LICENSE
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README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

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