{"record":{"id":"9909fd1f1c42bc1e","repo":"apache/iceberg","slug":"snapshot-validation-not-supported-by-this-get","errorCode":null,"errorMessage":"\"Snapshot validation not supported by \" + this.getClass().getName()","messagePattern":"\"Snapshot validation not supported by \" \\+ this\\.getClass\\(\\)\\.getName\\(\\)","errorType":"exception","errorClass":"UnsupportedOperationException","httpStatus":null,"severity":"error","filePath":"api/src/main/java/org/apache/iceberg/SnapshotUpdate.java","lineNumber":93,"sourceCode":"    throw new UnsupportedOperationException(\n        this.getClass().getName() + \" does not support writeManifestsWith\");\n  }\n\n  /**\n   * Perform operations on a particular branch\n   *\n   * @param branch which is name of SnapshotRef of type branch.\n   * @return this for method chaining\n   */\n  default ThisT toBranch(String branch) {\n    throw new UnsupportedOperationException(\n        String.format(\n            \"Cannot commit to branch %s: %s does not support branch commits\",\n            branch, this.getClass().getName()));\n  }\n\n  default ThisT validateWith(SnapshotAncestryValidator validator) {\n    throw new UnsupportedOperationException(\n        \"Snapshot validation not supported by \" + this.getClass().getName());\n  }\n}\n","sourceCodeStart":75,"sourceCodeEnd":97,"githubUrl":"https://github.com/apache/iceberg/blob/86d9c8fc543e7c56c9f624eb725f76c9baff9570/api/src/main/java/org/apache/iceberg/SnapshotUpdate.java#L75-L97","documentation":"Default-method guard on SnapshotUpdate.validateWith: the snapshot-update implementation does not accept a custom SnapshotAncestryValidator for pre-commit validation. The message names the runtime class; passing a different validator cannot fix it — the capability is simply absent.","triggerScenarios":"Thrown at api/src/main/java/org/apache/iceberg/SnapshotUpdate.java:93 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Rely on the operation's built-in conflict validation instead of a custom ancestry validator","Catch UnsupportedOperationException and skip custom validation","Override validateWith in the operation implementation"],"exampleFix":null,"handlingStrategy":"type-guard","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"86d9c8fc543e7c56c9f624eb725f76c9baff9570","analyzedAt":"2026-09-12T00:46:39.097Z","contentChangedAt":"2026-09-12T00:46:39.097Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}