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https://issues.apache.org/jira/browse/FLINK-9949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16555676#comment-16555676
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ASF GitHub Bot commented on FLINK-9949:
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GitHub user GJL opened a pull request:
https://github.com/apache/flink/pull/6419
[FLINK-9949][tests] Kill Flink processes in DB/teardown
## What is the purpose of the change
*Not killing Flink processes at the end of a test, can cause interference
with subsequent test runs.*
## Brief change log
- *Kill Flink processes in `DB/teardown!`.*
## Verifying this change
This change added tests and can be verified as follows:
- *Ran tests in docker.*
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes /
**no** / don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (**not applicable** / docs /
JavaDocs / not documented)
cc: @tillrohrmann
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/GJL/flink FLINK-9949
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/6419.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 #6419
----
commit db3cecb5c9fb16d707e02b436244ba8fd5ee1ce8
Author: gyao <gary@...>
Date: 2018-07-25T13:28:40Z
[FLINK-9949][tests] Kill Flink processes in DB/teardown
----
> Jepsen: Kill Flink processes when tearing down cluster
> ------------------------------------------------------
>
> Key: FLINK-9949
> URL: https://issues.apache.org/jira/browse/FLINK-9949
> Project: Flink
> Issue Type: Bug
> Components: Tests
> Affects Versions: 1.6.0
> Reporter: Gary Yao
> Assignee: Gary Yao
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.6.0
>
>
> Because Flink processes are not killed at the end of the tests, it can happen
> that surviving instances create znodes in the ZooKeeper ensemble of the next
> test run. This creates ambiguity when we retrieve the address of the leading
> REST server from ZooKeeper.
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