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epriestley 37f1f55557 Fix a possible deadlock in unit tests after an error 
Summary:
After certain types of errors, we may deadlock when trying to destroy test databases.

Specifically, we still have connections open to, say, `phabricator_unittest_abasonaknlbaklnasb_herald` (or whatever) and MySQL sometimes (not sure exactly when?) waits for them before destorying the database.

Test Plan:
  - Added `$m = null; $m->method()` to a fixture test to force a fatal.
  - Saw consistent deadlock, with `storage destroy` never exiting.
  - Added `--trace` to the `storage destroy` command and made it use `phutil_passthru()` so I could see what was happening.
  - Saw it hang on some arbitrary database.
  - Conneced to MySQL, used `show full processlist;` to see what was wrong.
  - Saw the `DROP DATABASE ...` command waiting for locks to release on the database, and other connections still open.
  - Applied patch.
  - Saw consistent success.
  - Used `storage destroy --unittest-fixtures` to clean up extra databases.

Reviewers: chad

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D14875
2015-12-24 09:11:47 -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 Implement child/descendant query rules in Projects 2015-12-23 14:38:51 -08:00
scripts Improve bin/lipsum UX 2015-12-24 09:06:35 -08:00
src Fix a possible deadlock in unit tests after an error 2015-12-24 09:11:47 -08:00
support Add a "Startup" to DarkConsole 2015-08-21 14:53:29 -07:00
webroot Remove various unused beahviors from PHUIWorkboardView 2015-12-23 14:01:14 -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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