{"record":{"id":"9bf7c054c867e40c","repo":"vitessio/vitess","slug":"getversion-s-failed-v","errorCode":null,"errorMessage":"GetVersion(%s) failed: %v","messagePattern":"GetVersion\\((.+?)\\) failed: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"go/vt/vtctl/grpcvtctldserver/server.go","lineNumber":5422,"sourceCode":"\tdefer panicHandler(&err)\n\n\tshard, err := s.ts.GetShard(ctx, req.Keyspace, req.Shard)\n\tif err != nil {\n\t\terr = fmt.Errorf(\"GetShard(%s) failed: %v\", req.Shard, err)\n\t\treturn nil, err\n\t}\n\n\tif !shard.HasPrimary() {\n\t\terr = fmt.Errorf(\"no primary in shard %v/%v\", req.Keyspace, req.Shard)\n\t\treturn nil, err\n\t}\n\n\tlog.Info(fmt.Sprintf(\"Gathering version for primary %v\", topoproto.TabletAliasString(shard.PrimaryAlias)))\n\tprimaryVersion, err := s.GetVersion(ctx, &vtctldatapb.GetVersionRequest{\n\t\tTabletAlias: shard.PrimaryAlias,\n\t})\n\tif err != nil {\n\t\terr = fmt.Errorf(\"GetVersion(%s) failed: %v\", topoproto.TabletAliasString(shard.PrimaryAlias), err)\n\t\treturn nil, err\n\t}\n\n\taliases, err := s.ts.FindAllTabletAliasesInShard(ctx, req.Keyspace, req.Shard)\n\tif err != nil {\n\t\terr = fmt.Errorf(\"FindAllTabletAliasesInShard(%s, %s) failed: %v\", req.Keyspace, req.Shard, err)\n\t\treturn nil, err\n\t}\n\n\ter := concurrency.AllErrorRecorder{}\n\twg := sync.WaitGroup{}\n\tfor _, alias := range aliases {\n\t\tif topoproto.TabletAliasEqual(alias, shard.PrimaryAlias) {\n\t\t\tcontinue\n\t\t}\n\n\t\twg.Add(1)\n\t\tgo func(alias *topodatapb.TabletAlias) {","sourceCodeStart":5404,"sourceCodeEnd":5440,"githubUrl":"https://github.com/vitessio/vitess/blob/01a25a7d176f94613b8d59d799f438380a8760e4/go/vt/vtctl/grpcvtctldserver/server.go#L5404-L5440","documentation":"ValidateShard fetches the vttablet version of the shard's primary via s.GetVersion. Failure is wrapped as \"GetVersion(%s) failed: %v\" with the primary tablet alias, and validation aborts since the primary version is the comparison baseline.","triggerScenarios":"GetVersion RPC to the primary tablet fails: vttablet process down, RPC timeout, gRPC connectivity problem between vtctld and the tablet.","commonSituations":"Primary tablet crashed or is being restarted; firewall/network issue; tablet alias in shard record points to a decommissioned tablet.","solutions":["Check the primary tablet's health (vtctldclient GetTablet <alias>; ping the tablet's gRPC port).","Restart vttablet on the primary host if the process is down.","If the alias is stale, fix the shard record via a reparent before re-running validation."],"exampleFix":null,"handlingStrategy":"retry","validationCode":"tab, err := ts.GetTablet(ctx, shard.PrimaryAlias); if err != nil { return err }; conn, err := tmc.Ping(ctx, tab.Tablet); if err != nil { /* primary unreachable — repair before GetVersion */ }","typeGuard":null,"tryCatchPattern":"ver, err := s.GetVersion(ctx, req); if err != nil { if isTabletRPCError(err) { /* wait & retry with backoff; tablet may be restarting */ } return fmt.Errorf(\"GetVersion failed: %w\", err) }","preventionTips":["Ping tablets before version comparisons","Schedule version validation outside tablet restarts","Alert on stale primary aliases in shard records"],"tags":["tablet","version","rpc","vtctld"],"backgroundTag":"tablet-unreachable","analyzedSha":"01a25a7d176f94613b8d59d799f438380a8760e4","analyzedAt":"2026-09-01T17:28:30.605Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}