Use chan only to notify command is done #5244
Open
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Outdated suggestions cannot be applied.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.
What this PR does / why we need it:
The original IsRunning method has a bug when the command exits with an error.
After the command is done with an error, IsRunning returns true once if GracefulStop is not called.
This comes from using
chan error
to both pass the result and notify the finish.This PR splits these things to
chan struct{}
andatomic.Pointer[error]
.Which issue(s) this PR fixes:
The flaky test
TestGracefulStopCommand
.Fixes #4630
Does this PR introduce a user-facing change?: