Allow Partial Success for ImageGC #44986
Merged
+20
−18
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
k8s-ci-robot
added
the
cncf-cla: yes
|
This change is |
k8s-github-robot
added
size/M
|
/release-note-none |
k8s-ci-robot
added
release-note-none
dchen1107
added
release-note
|
Since we decided to cherrypick the fix to 1.6 branch, I suggested we include a reasonable release-note for it. /lgtm |
k8s-ci-robot
added
the
lgtm
k8s-github-robot
added
the
approved
|
@k8s-bot gce etcd3 e2e test this Updated release note lgtm. Thanks /lgtm |
|
[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: dashpole, dchen1107
Needs approval from an approver in each of these OWNERS Files:
You can indicate your approval by writing |
|
Automatic merge from submit-queue |
|
Commit found in the "release-1.6" branch appears to be this PR. Removing the "cherrypick-candidate" label. If this is an error find help to get your PR picked. |
k8s-github-robot
pushed a commit
that referenced
this pull request
May 18, 2017
Automatic merge from submit-queue [Bug Fix] Return quantity freed even when an error exists bug was added by #44986. If we get an error from deleteImages, we try and use the bytes freed in a calculation. That PR changed the behavior from evicting a pod upon error, to panicking because of the nil pointer. This should fix inode eviction tests /assign @dchen1107
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Fixes #44951. When the eviction manager is under disk pressure, it first attempts to reclaim disk space by deleting images. However, if there are any errors during the image deletion process, the eviction manager treats that as a failed attempt delete images--even if some were successfully deleted.
This change essentially makes the eviction manager ignore errors during image garbage collection, and instead rely solely on the quantity of resources reclaimed. If image deletion completely fails, for example, then this should still work as it would return 0 bytes freed. This allows for partial success, because any resources freed are counted, regardless of if some images fail to be deleted, for example.
This does not require any changes to the image manager, as the current behavior is already to return the disk space freed along with any errors.
cc @dchen1107 @vishh @kubernetes/kubernetes-release-managers
note to reviewers: this is mostly whitespace changes, so it will make more sense in reviewable