{"record":{"id":"b9603481501c94ab","repo":"vitessio/vitess","slug":"no-response-received-for-vdiff-show-of-s-s-s","errorCode":null,"errorMessage":"no response received for vdiff show of %s.%s(%s)","messagePattern":"no response received for vdiff show of (.+?)\\.(.+?)\\((.+?)\\)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"go/vt/vtctl/vdiff2.go","lineNumber":353,"sourceCode":"\t\t\t\tif format == \"json\" {\n\t\t\t\t\twr.Logger().Printf(\"{}\\n\")\n\t\t\t\t} else {\n\t\t\t\t\twr.Logger().Printf(\"No previous vdiff found for %s.%s\\n\", keyspace, workflowName)\n\t\t\t\t}\n\t\t\t\treturn nil\n\t\t\t}\n\t\t\tbreak\n\t\t}\n\t\tfallthrough\n\tdefault:\n\t\tif vdiffUUID == uuid.Nil { // then it must be passed as the action arg\n\t\t\tvdiffUUID, err = uuid.Parse(actionArg)\n\t\t\tif err != nil {\n\t\t\t\treturn err\n\t\t\t}\n\t\t}\n\t\tif len(output.Responses) == 0 {\n\t\t\treturn fmt.Errorf(\"no response received for vdiff show of %s.%s(%s)\", keyspace, workflowName, vdiffUUID.String())\n\t\t}\n\t\t_, err := displayVDiff2ShowSingleSummary(wr, format, keyspace, workflowName, vdiffUUID.String(), output, verbose)\n\t\treturn err\n\t}\n}\n\nfunc displayVDiff2ShowRecent(wr *wrangler.Wrangler, format, keyspace, workflowName, subCommand string, output *wrangler.VDiffOutput) error {\n\tstr := \"\"\n\trecent, err := buildVDiff2Recent(output)\n\tif err != nil {\n\t\treturn err\n\t}\n\tif format == \"json\" {\n\t\tjsonText, err := json.MarshalIndent(recent, \"\", \"\\t\")\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\t\tstr = string(jsonText)","sourceCodeStart":335,"sourceCodeEnd":371,"githubUrl":"https://github.com/vitessio/vitess/blob/01a25a7d176f94613b8d59d799f438380a8760e4/go/vt/vtctl/vdiff2.go#L335-L371","documentation":"displayVDiff2ShowResponse expects the vtctld to return at least one VDiff response entry for a show request over a specific UUID. An empty Responses slice means no tablet/current vdiff record answered, so this error is returned naming the keyspace, workflow, and UUID.","triggerScenarios":"`VDiff -- <ks>.<wf> show <uuid>` (or show all) where the aggregation produced zero responses — e.g. the vdiff record is gone, the workflow has no tablets responding, or the UUID exists nowhere in the shard data.","commonSituations":"Showing a UUID after it was already deleted; vtctld able to reach no tablets (shard/tablet down); running show against a workflow whose vdiff never actually started; stale topology cache.","solutions":["Run `VDiff -- <ks>.<wf> show all` to confirm which UUIDs actually exist.","Check tablets for the workflow are up and serving (vtctld can reach them).","Verify the workflow exists: check vreplication streams for keyspace/workflow.","Retry after vtctld/topology connectivity is restored."],"exampleFix":"// before\nVDiff -- commerce.move.tables show bd2f3e5a-...   // already deleted\n// after\nVDiff -- commerce.move.tables show all\nVDiff -- commerce.move.tables show <uuid from the list>","handlingStrategy":"try-catch","validationCode":"const all = runVDiff(`-- ${ks}.${wf} show all`)\nif (!all.includes(uuid)) {\n  throw new Error(`UUID ${uuid} not present for ${ks}.${wf}; skip show`)\n}","typeGuard":"null","tryCatchPattern":"try {\n  out = runVDiff(`-- ${ks}.${wf} show ${uuid}`)\n} catch (e) {\n  if (String(e).includes(\"no response received\")) {\n    console.error(\"No vdiff data returned; verify workflow is active and tablets are reachable\")\n    out = runVDiff(`-- ${ks}.${wf} show all`)\n  } else throw e\n}","preventionTips":["Confirm the workflow/vdiff still exists before showing a specific UUID.","Check tablet health and vtctld connectivity before querying vdiff state.","Treat empty show output as 'vdiff record gone' and fall back to `show all`."],"tags":["vdiff","vreplication","empty-response","vtctld"],"backgroundTag":"empty-rpc-response","analyzedSha":"01a25a7d176f94613b8d59d799f438380a8760e4","analyzedAt":"2026-09-01T17:28:30.605Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}