GitHub user zentol opened a pull request:
https://github.com/apache/flink/pull/5331
[FLINK-8473][webUI] Improve error behavior of JarListHandler
## What is the purpose of the change
This PR modifies the `JarListHandler` to not crash when the jar storage
directory has been deleted. This caused the job-submission-page in the webUI to
be completely blank.
We now log a warning (to make debugging easier) and continue on as if the
directory was empty (so that the page isn't blank).
## Verifying this change
Manually verified and not covered by tests, like the rest of the handler.
## 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)
- 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/zentol/flink 8473
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5331.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 #5331
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commit c660166ce1818b08f7cd44da5cc504ed73d20177
Author: zentol <chesnay@...>
Date: 2018-01-22T12:29:34Z
[FLINK-8473][webUI] Improve error behavior of JarListHandler
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