GitHub user tison1 opened a pull request: https://github.com/apache/flink/pull/6370
[FLINK-9894] [runtime] Potential Data Race ## What is the purpose of the change *(CoLocationGroup#ensureConstraints may cause data race on `constraints`. synchronize its use to avoid that)* ## Verifying this change This change is a trivial rework / code cleanup without any test coverage. You can merge this pull request into a Git repository by running: $ git pull https://github.com/tison1/flink patential-race Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/6370.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #6370 ---- commit 34eace0951363e1d221d2f145dce80d24e5372a7 Author: éæ¢ç« <wander4096@...> Date: 2018-07-19T08:13:18Z [FLINK-9894] [runtime] Potential Data Race ---- ---