tree 6c0dba678f7423a2bcadde3f2861a984c9ddd670
parent 48ae33ffde9edd0952560949b6b4b66e15408b1e
author Kazuhiro Inaba <kinaba@google.com> 1600930607 +0900
committer Commit Bot <commit-bot@chromium.org> 1600950309 +0000

cheets_CTS/GTS: Don't break locks in haste.

Examining the logs from (un)lock errors in the tests, none
seems to be due to aborted jobs that could not unlock the
lock. Rather, all of them seems to be due to too many tasks
congested.

In the latter situation, breaking a lock just triggers
more cascading lock errors. This CL stops the lock break
unless the lock has taken by some process for 4 hours,
which shouldn't happen even in the most overloaded situation.

BUG=b:126165348
BUG=chromium:1098656
TEST=locally tweaked the cache dir and left fake lockfile.

Change-Id: Ie50abed8f54616716d5fd016d008db42ffb74cd7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2428291
Reviewed-by: Kazuhiro Inaba <kinaba@chromium.org>
Commit-Queue: Kazuhiro Inaba <kinaba@chromium.org>
Tested-by: Kazuhiro Inaba <kinaba@chromium.org>
Auto-Submit: Kazuhiro Inaba <kinaba@chromium.org>