David Turner 3d57a78deb Add extra logging for investigation into #52000 (#52472)
It looks like #52000 is caused by a slowdown in cluster state application
(maybe due to #50907) but I would like to understand the details to ensure that
there's nothing else going on here too before simply increasing the timeout.
This commit enables some relevant `DEBUG` loggers and also captures stack
traces from all threads rather than just the three hottest ones.
2020-02-18 13:02:33 +00:00
..