FLINK-37949: Avoid netty deadlock with graceful shutdown #215
+155
−12
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
https://issues.apache.org/jira/browse/FLINK-37949 shows that a deadlock in the netty client can cause savepoint delay. This change ensures that any pending operations are terminated before closing down the client and also updates the latest minor version of netty in case this is a known deadlock issue.