RATATOSKRATATOSK
Sign in

Dapr

v1.16.11Orchestration & Management
Mar 27, 2026

Three critical Scheduler HA bugs fixed — cascading crashes, silent partition stalls, and Windows AKS sidecar failures — plus a Go security bump to 1.25.8.

  • breakingUpgrade immediately if running Scheduler in HA mode

    Any multi-instance Scheduler deployment on v1.16.0–v1.16.10 is exposed to two distinct failure modes: a cascading crash under high job load, and a silent stall where instances hold partition leases but never fire jobs. Both require restarting all Scheduler pods to recover. Neither has a workaround short of upgrading. If you're running Dapr Workflows, actor reminders, or scheduled jobs in HA, treat this as urgent — workflows can stop firing entirely after a routine pod eviction or rolling update.

  • breakingWindows AKS users: broken since v1.16.9, fixed here

    If you deployed Dapr on AKS Windows nodes between v1.16.9 and v1.16.10, your daprd sidecars have been stuck in CrashLoopBackOff. The root cause was a Docker manifest tooling change that dropped the os.version field, causing the Windows container runtime to pull the wrong image variant. Upgrading to v1.16.11 restores correct behavior — no manifest or config changes needed on your end.

  • securityGo 1.25.8 security patches — rebuild or upgrade

    Go 1.25.8 fixes vulnerabilities in html/template, net/url, and os packages. If you're running Dapr v1.16.10 or earlier, the binary was built against a patched Go version that still carries these issues. Upgrading to v1.16.11 picks up the fixed runtime automatically. If you also maintain custom Dapr-adjacent services built with Go 1.25.7, rebuild those separately.

Key changes (5)

  • Go runtime updated from 1.25.7 to 1.25.8, patching security issues in html/template, net/url, and os packages
  • Scheduler no longer crashes with 'catastrophic state machine error' during leadership changes under high job throughput — stale CloseJob events are now treated as no-ops
  • Fixed a race condition where a Scheduler instance would silently stop participating after scale-up, leaving partitions permanently undeliverable without a full pod restart
  • Windows daprd sidecar on AKS now starts correctly — image manifest reverted to include os.version field, fixing CrashLoopBackOff since v1.16.9
  • Both Scheduler fixes apply to all HA deployments running v1.16.0 through v1.16.10
Source ↗All Dapr releases →