{"record":{"id":"3debddd10ef4e04c","repo":"hashicorp/nomad","slug":"failed-updating-variable-index-w","errorCode":null,"errorMessage":"failed updating variable index: %w","messagePattern":"failed updating variable index: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"nomad/state/state_store_variables.go","lineNumber":582,"sourceCode":"\tif err != nil {\n\t\treq.ErrorResponse(idx, fmt.Errorf(\"failed lock release: %s\", err))\n\t}\n\n\tif err := tx.Commit(); err != nil {\n\t\treturn req.ErrorResponse(idx, err)\n\t}\n\n\treturn req.SuccessResponse(idx, &updated.VariableMetadata)\n}\n\nfunc (s *StateStore) updateVarsAndIndexTxn(tx WriteTxn, idx uint64, sv *structs.VariableEncrypted) error {\n\tif err := tx.Insert(TableVariables, sv); err != nil {\n\t\treturn fmt.Errorf(\"failed inserting variable: %w\", err)\n\t}\n\n\tif err := tx.Insert(tableIndex,\n\t\t&IndexEntry{TableVariables, idx}); err != nil {\n\t\treturn fmt.Errorf(\"failed updating variable index: %w\", err)\n\t}\n\treturn nil\n}\n\nfunc isLocked(lock *structs.VariableLock, req *structs.VarApplyStateRequest) bool {\n\tif lock != nil {\n\t\tif req.Var.VariableMetadata.Lock == nil ||\n\t\t\treq.Var.VariableMetadata.Lock.ID != lock.ID {\n\n\t\t\treturn true\n\t\t}\n\t}\n\treturn false\n}\n","sourceCodeStart":564,"sourceCodeEnd":597,"githubUrl":"https://github.com/hashicorp/nomad/blob/482b49bf1aec006f089bcfc7e632d8f6ac303e5e/nomad/state/state_store_variables.go#L564-L597","documentation":"After inserting the variable, updateVarsAndIndexTxn updates the table's IndexEntry (TableVariables -> idx) so blocking queries see the new version. This error wraps tx.Insert into tableIndex failing. The variable insert was already performed in the same transaction, but since the function returns early the transaction aborts and the whole write is rolled back.","triggerScenarios":"tx.Insert(tableIndex, &IndexEntry{TableVariables, idx}) fails while committing any variable mutation (apply, lock release) in the FSM state store.","commonSituations":"Same storage-layer failures as variable insert: disk-full data_dir, BoltDB errors, memory pressure; rarely seen in isolation on a healthy server.","solutions":["Check the wrapped cause and server logs; verify disk space and health of the Nomad data_dir.","Restart the server to rebuild state; restore from snapshot if corruption is detected.","Retry the operation; the aborted transaction leaves state consistent at the previous index."],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":"func isVarIndexUpdateFailure(err error) bool { return err != nil && strings.Contains(err.Error(), \"failed updating variable index\") }","tryCatchPattern":"if err := applyVariable(op); err != nil {\n  if isVarIndexUpdateFailure(err) {\n    // whole txn aborted; state is consistent at previous index\n    return retryWithBackoff(op)\n  }\n  return err\n}","preventionTips":["Monitor data_dir disk and inode usage.","Confirm index entries via nomad operator debug when odd blocking-query behavior appears.","Keep servers on supported versions to avoid known state-store bugs."],"tags":["nomad","state-store","raft-index","storage"],"backgroundTag":"state-store-write-failed","analyzedSha":"482b49bf1aec006f089bcfc7e632d8f6ac303e5e","analyzedAt":"2026-09-04T07:54:14.808Z","contentChangedAt":"2026-09-04T07:54:14.808Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}