GitHub user sihuazhou opened a pull request:
https://github.com/apache/flink/pull/6132
[FLINK-9456][Distributed Coordination]Let ResourceManager notify JobManager
about failed/killed TaskManagers.
## What is the purpose of the change
*Often, the ResourceManager learns faster about TaskManager
failures/killings because it directly communicates with the underlying resource
management framework. Instead of only relying on the JobManager's heartbeat to
figure out that a TaskManager has died, we should additionally send a signal
from the ResourceManager to the JobManager if a TaskManager has died. That way,
we can react faster to TaskManager failures and recover our running job/s.*
## Brief change log
- *Add `JobMasterGateway#taskManagerTerminated()` to notify the task
manager terminated and do the disconnection there.*
- *Let the `ResourceManager` to notify JobMaster when the task manager
terminated*
## Verifying this change
- once this approach is verified in general, I will add tests for it.
## 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
No
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sihuazhou/flink FLINK-9456
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/6132.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 #6132
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commit 652ac037ef3edc75cea0abd4966c2154d6e5fbc0
Author: sihuazhou <summerleafs@...>
Date: 2018-05-10T06:36:27Z
Let ResourceManager notify JobManager about failed/killed TaskManagers.
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