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linux-foundation-easycla[bot]
fangfenghuang
yliaog
What type of PR is this?
/kind bug
What this PR does / why we need it:
release lock when error occour and graceful shotdown
Which issue(s) this PR fixes:
Fixes #278
Special notes for your reviewer:
Does this PR introduce a user-facing change?
Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.: