{"record":{"id":"342b8387c894cd55","repo":"apache/flink","slug":"unable-to-deserialize-byte-array-342b83","errorCode":null,"errorMessage":"Unable to deserialize byte array.","messagePattern":"Unable to deserialize byte array\\.","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"flink-formats/flink-csv/src/main/java/org/apache/flink/formats/csv/RowCsvInputFormat.java","lineNumber":307,"sourceCode":"                createNullableRuntimeConverter(elementType, ignoreParseErrors);\n\n        return (node) -> {\n            final int nodeSize = node.size();\n            final Object[] array = (Object[]) Array.newInstance(elementClass, nodeSize);\n            for (int i = 0; i < nodeSize; i++) {\n                array[i] = elementConverter.convert(node.get(i));\n            }\n            return array;\n        };\n    }\n\n    private static RuntimeConverter createByteArrayRuntimeConverter(boolean ignoreParseErrors) {\n        return (node) -> {\n            try {\n                return node.binaryValue();\n            } catch (IOException e) {\n                if (!ignoreParseErrors) {\n                    throw new RuntimeException(\"Unable to deserialize byte array.\", e);\n                }\n                return null;\n            }\n        };\n    }\n\n    static void validateArity(int expected, int actual, boolean ignoreParseErrors) {\n        if (expected != actual && !ignoreParseErrors) {\n            throw new RuntimeException(\n                    \"Row length mismatch. \"\n                            + expected\n                            + \" fields expected but was \"\n                            + actual\n                            + \".\");\n        }\n    }\n\n    /** Create a builder. */","sourceCodeStart":289,"sourceCodeEnd":325,"githubUrl":"https://github.com/apache/flink/blob/2f3c205e9266cb30240eb7f4fdab15cad629a70f/flink-formats/flink-csv/src/main/java/org/apache/flink/formats/csv/RowCsvInputFormat.java#L289-L325","documentation":"Error \"Unable to deserialize byte array.\" thrown in apache/flink.","triggerScenarios":"Triggered at runtime when the operation fails because: Unable to deserialize byte array.","commonSituations":"Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Unable to deserialize byte array.","solutions":["Address the cause reported by the error message: Unable to deserialize byte array.","Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry."],"exampleFix":"Correct the condition described (\"Unable to deserialize byte array.\") 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"}