{"record":{"id":"29f1900528bf9bed","repo":"GoogleContainerTools/jib","slug":"failed-to-generate-a-jib-file-map-for-sync-with-sk","errorCode":null,"errorMessage":"Failed to generate a Jib file map for sync with Skaffold","messagePattern":"Failed to generate a Jib file map for sync with Skaffold","errorType":"exception","errorClass":"GradleException","httpStatus":null,"severity":"error","filePath":"jib-gradle-plugin/src/main/java/com/google/cloud/tools/jib/gradle/skaffold/SyncMapTask.java","lineNumber":95,"sourceCode":"                  + \"'\");\n        }\n      } catch (InvalidContainerizingModeException ex) {\n        throw new GradleException(\"Invalid containerizing mode\", ex);\n      }\n\n      try {\n        String syncMapJson =\n            PluginConfigurationProcessor.getSkaffoldSyncMap(\n                configuration,\n                projectProperties,\n                jibExtension.getSkaffold().getSync().getExcludes());\n\n        System.out.println();\n        System.out.println(\"BEGIN JIB JSON: SYNCMAP/1\");\n        System.out.println(syncMapJson);\n\n      } catch (Exception ex) {\n        throw new GradleException(\"Failed to generate a Jib file map for sync with Skaffold\", ex);\n      }\n    }\n  }\n}\n","sourceCodeStart":77,"sourceCodeEnd":100,"githubUrl":"https://github.com/GoogleContainerTools/jib/blob/fb949e2676afbbd7dd7a1ef61e20251931325654/jib-gradle-plugin/src/main/java/com/google/cloud/tools/jib/gradle/skaffold/SyncMapTask.java#L77-L100","documentation":"After passing validation, SyncMapTask calls PluginConfigurationProcessor.getSkaffoldSyncMap to compute the sync map JSON. Any exception during that computation (or while building the Jib container context for it) is wrapped in this GradleException, so the task fails with a friendly message while retaining the cause.","triggerScenarios":"Running the Skaffold sync map task when getSkaffoldSyncMap throws: bad build output configuration, missing build artifacts, files not found for the build, or any internal Jib error during sync-map generation.","commonSituations":"Broken build outputs (e.g. jar not built or at unexpected location), misconfigured jib.build.outputPaths, or platform/registry configuration problems surfaced while computing the map.","solutions":["Read the 'Caused by' chain in the Gradle exception output for the root failure.","Run the underlying jar/build task first so expected artifacts exist before generating the sync map.","Fix any jib configuration (appRoot, output paths, base image) flagged by the cause.","Upgrade jib-gradle-plugin if the cause is a known Jib bug."],"exampleFix":"// before: running skaffold dev without building\n./gradlew jibSkaffoldSyncMap\n// after\n./gradlew bootJar jibSkaffoldSyncMap","handlingStrategy":"try-catch","validationCode":"// Ensure build output exists before sync-map generation\n./gradlew assemble && ./gradlew jibSkaffoldSyncMap","typeGuard":null,"tryCatchPattern":"try {\n  // run sync map task\n} catch (GradleException e) {\n  if (e.message == 'Failed to generate a Jib file map for sync with Skaffold') {\n    e.cause?.printStackTrace() // inspect root cause\n  }\n}","preventionTips":["Build the jar before generating the sync map.","Fix jib output path configuration flagged in the cause.","Keep the plugin up to date to avoid known generation bugs."],"tags":["skaffold","gradle","sync-map","wrapped-exception"],"backgroundTag":"internal-invariant-violation","analyzedSha":"fb949e2676afbbd7dd7a1ef61e20251931325654","analyzedAt":"2026-09-06T14:04:09.491Z","contentChangedAt":"2026-09-06T14:04:09.491Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}