fix: Add retry mechanism for status update conflicts in ArksApplicati… #64
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…on and ArksDisaggregatedApplication Wraps Status().Update() calls with retry.RetryOnConflict() to handle concurrent modifications during reconciliation. This prevents 'the object has been modified' errors when users modify resources while the controller is updating status. Controllers fixed: - ArksDisaggregatedApplication: Confirmed production issue with frequent Prefill/Decode tuning - ArksApplication: Same vulnerability pattern with frequent replica/config changes
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Summary
Fixes resource version conflict errors when updating CRD status in high-frequency operation scenarios.
Problem
When users frequently modify Arks resources, the controller logs version conflict errors:
E1029 12:48:01.420297 failed to update status:
"Operation cannot be fulfilled on arksapplications.arks.ai:
the object has been modified; please apply your changes to
the latest version and try again"
Root cause: During controller reconcile (100-500ms), user modifications increment resourceVersion, causing status update with outdated version to fail.
Solution
Wrap
Status().Update()withretry.RetryOnConflict():Changes
Modified 2 controllers to add retry mechanism for status updates:
internal/controller/arksapplication_controller.gointernal/controller/arksdisaggregatedapplication_controller.goImpact
Before: ERROR logs with version conflicts, status updates fail and require automatic requeue
After: Silent automatic retry on conflicts, status updates succeed, no ERROR logs for expected conflicts
Compatibility
No breaking changes, compatible with existing deployments.