{"record":{"id":"cb96b7c5bb4134e0","repo":"apache/flink","slug":"unsupported-input-message-value","errorCode":null,"errorMessage":"Unsupported input message: {value}","messagePattern":"Unsupported input message: (.+?)","errorType":"exception","errorClass":"UnsupportedOperationException","httpStatus":null,"severity":"error","filePath":"flink-connectors/flink-connector-files/src/main/java/org/apache/flink/connector/file/table/batch/compact/BatchCompactOperator.java","lineNumber":118,"sourceCode":"            } else if (paths.size() > 1) {\n                Path targetPath =\n                        createCompactedFile(\n                                paths, getRuntimeContext().getTaskInfo().getAttemptNumber());\n                path =\n                        CompactFileUtils.doCompact(\n                                fileSystem,\n                                partition,\n                                paths,\n                                targetPath,\n                                config,\n                                readerFactory,\n                                writerFactory);\n            }\n            if (path != null) {\n                compactedFiles.computeIfAbsent(partition, k -> new ArrayList<>()).add(path);\n            }\n        } else {\n            throw new UnsupportedOperationException(\"Unsupported input message: \" + value);\n        }\n    }\n\n    @Override\n    public void endInput() throws Exception {\n        // emit the compacted files to downstream\n        output.collect(new StreamRecord<>(new CompactOutput(compactedFiles)));\n    }\n\n    @Override\n    public void close() throws Exception {\n        compactedFiles.clear();\n    }\n\n    private static Path createCompactedFile(List<Path> uncompactedFiles, int attemptNumber) {\n        Path path = convertFromUncompacted(uncompactedFiles.get(0));\n        // different attempt will have different target paths to avoid different attempts will\n        // write same path","sourceCodeStart":100,"sourceCodeEnd":136,"githubUrl":"https://github.com/apache/flink/blob/2f3c205e9266cb30240eb7f4fdab15cad629a70f/flink-connectors/flink-connector-files/src/main/java/org/apache/flink/connector/file/table/batch/compact/BatchCompactOperator.java#L100-L136","documentation":"Error \"Unsupported input message: {value}\" thrown in apache/flink.","triggerScenarios":"Triggered at runtime when the operation fails because: Unsupported input message: the reported value.","commonSituations":"Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Unsupported input message: the reported value.","solutions":["Address the cause reported by the error message: Unsupported input message: the reported value","Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry."],"exampleFix":"Correct the condition described (\"Unsupported input message: the reported value\") and rerun the job or command.","handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"2f3c205e9266cb30240eb7f4fdab15cad629a70f","analyzedAt":"2026-08-14T08:48:24.518Z","schemaVersion":2},"datasetVersion":"2026-08-14T10:17:34.591Z"}