Similar to #6662. These instances of double-checked locking were not identified in that PR. For anyone who is willing to do this: please read this thread carefully: https://github.com/apache/incubator-druid/pull/6662#discussion_r236302382
Similar to #6662. These instances of double-checked locking were not identified in that PR.
For anyone who is willing to do this: please read this thread carefully: #6662 (comment)