GitHub user tillrohrmann opened a pull request: https://github.com/apache/flink/pull/6154
[FLINK-9573] Extend LeaderElectionService#hasLeadership to take leader session id ## What is the purpose of the change The new `LeaderElectionService#hasLeadership` also takes the leader session id and verifies whether this is the correct leader session id associated with the leadership. ## Brief change log - Extend `LeaderElectionService#hasLeadership` to take a leader session id and check whether it identifies the current leader session - Adapt the calls to `LeaderElectionService#hasLeadership` to take the current leader session id ## Verifying this change - Added `LeaderElectionTest`. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no) - The serializers: (no) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (not applicable) You can merge this pull request into a Git repository by running: $ git pull https://github.com/tillrohrmann/flink extendLeaderElectionService Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/6154.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 #6154 ---- commit 54831c6a07dfcd5691fd732148a7c559514362ec Author: Till Rohrmann <trohrmann@...> Date: 2018-06-12T13:22:50Z [hotfix] Remove Scala dependency from ZooKeeperLeaderElectionTest commit e50034088f4d85fe457e7015f162a6f86b1de9e7 Author: Till Rohrmann <trohrmann@...> Date: 2018-06-12T12:24:59Z [FLINK-9573] Extend LeaderElectionService#hasLeadership to take leader session id The new LeaderElectionService#hasLeadership also takes the leader session id and verifies whether this is the correct leader session id associated with the leadership. commit 104b46bd7848cd431afc564f6d3bb364a5257cf9 Author: Till Rohrmann <trohrmann@...> Date: 2018-06-12T12:40:13Z [hotfix] Fix checkstyle violations in SingleLeaderElectionService ---- ---