GitHub user shuai-xu opened a pull request: https://github.com/apache/flink/pull/4887
[FLINK-7870] [runtime] Cancel slot allocation to RM when requestSlot timed out in SlotPool ## What is the purpose of the change This pull request add a cancelSlotRequest rpc protocol between slot pool and resource manager. When the pending request timeout in slot pool, it send a cancelSlotRequest rpc to resouce manager to canel the previous slot request in order not to make the slot request become more and more in resource manager. ## Verifying this change This change added tests and can be verified as follows: - *Added a verify in SlotManagerTest to make sure the cancel logic ## 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: (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/shuai-xu/flink jira-xxxx Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/4887.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 #4887 ---- commit daf7fd5745659d94f5a84f669bc90b82b5e69e5e Author: shuai.xus <shuai....@alibaba-inc.com> Date: 2017-10-17T09:57:18Z [FLINK-xxxx] slot pool cancel slot request to resource manager if timeout Summary: slot pool cancel slot request to resource manager if timeout Test Plan: unit test Reviewers: haitao.w Differential Revision: https://aone.alibaba-inc.com/code/D320749 commit 96f80187bb5ef1c268a62bdaf80151a70a04b002 Author: shuai.xus <shuai....@alibaba-inc.com> Date: 2017-10-19T04:13:01Z add more contract ---- ---