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epriestley e9af4f8970 Fix an issue where Drydock followup tasks would not queue if the main task failed
Summary:
Ref T9994. This fixes the first issue discussed on that task, which is that when a merge fails after "arc land", we would not clean up all the leases properly.

Specifically, when a merge fails, we use `queueTask()` to schedule a followup task. This followup destroys the lease and frees the underlying resource.

However, the default behavior of `queueTask()` is to //not queue tasks// if the parent task fails. This is a reasonable, safe behavior that was originally introduced in D8774, where it kept us from sending too much mail if a task did "send some mail" and then failed a little later on and got retried.

Since I think the default behavior is correct, I just special cased the behavior for Drydock to make it queue even on failure. These are the only types of followup tasks we currently want to queue on main task failure.

(It's possible that future Blueprints might want some kind of more specialized behavior, where some tasks queue only on success, but we can cross that bridge when we come to it.)

Test Plan:
  - See T9994#149878 for test case setup.
  - I ran that test case again with this patch, and saw the followup task queue properly in the `--trace` log, a correspoinding update task show up in `/daemon/`, and the lease get destroyed when I ran it a moment later.

{F1029915}

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9994

Differential Revision: https://secure.phabricator.com/D14818
2015-12-18 08:17:04 -08:00
bin Provide bin/garbage for interacting with garbage collection 2015-10-02 09:17:24 -07:00
conf Mark some strings for translation 2015-06-09 23:06:52 +10:00
externals Remove skins from Phame 2015-12-11 08:14:12 -08:00
resources Update the Celerity map. 2015-12-17 15:38:03 -08:00
scripts Add a lock to storage upgrade and adjustment 2015-12-02 06:18:28 +11:00
src Fix an issue where Drydock followup tasks would not queue if the main task failed 2015-12-18 08:17:04 -08:00
support Add a "Startup" to DarkConsole 2015-08-21 14:53:29 -07:00
webroot Indent multiple items from the same application in Quick Create menu 2015-12-17 15:24:46 -08:00
.arcconfig Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.arclint Apply phutil XHPAST linter standard 2015-11-13 07:09:12 +11:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig Fix text lint issues 2015-02-12 07:00:13 +11:00
.gitignore Add custom Cows and Figlet directories to .gitignore 2015-10-08 20:23:05 -07:00
LICENSE Fix text lint issues 2015-02-12 07:00:13 +11:00
NOTICE Update Phabricator NOTICE file to reflect modern legal circumstances 2014-06-25 13:42:13 -07:00
README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

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