[server] Add Cluster Health API implementation#3400
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@loserwang1024 comments addressed. PLTA. |
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Purpose
Linked issue: close #3399
GetClusterHealthRPC to Coordinator that computes cluster health from in-memory stateCoordinatorContext(marked inactive onNotifyLeaderAndIsrsend,marked active on successful response when responding server is still the leader)
CoordinatorRequestBatchby synthesizing error responses to clearpending inactive state
Admin.getClusterHealth()withClusterHealth/ClusterHealthStatustypesClusterHealthReadinessCheckCLI tool in fluss-dist (exit 0=GREEN, 1=not ready, 2=API unsupported)readiness-check.shtwo-step readiness probe script (TCP + Cluster Health API)with first-boot detection and grace period for API-unsupported (mixed-version rolling upgrade)
readiness-check.shin Helm chartBrief change log
Tests
API and Format
Documentation