{"record":{"id":"7087ede0e4f02e29","repo":"apache/flink","slug":"read-buffer-must-not-be-null","errorCode":null,"errorMessage":"Read buffer must not be null","messagePattern":"Read buffer must not be null","errorType":"validation","errorClass":"NullPointerException","httpStatus":null,"severity":"error","filePath":"flink-filesystems/flink-s3-fs-native/src/main/java/org/apache/flink/fs/s3native/NativeS3InputStream.java","lineNumber":309,"sourceCode":"                return -1;\n            }\n            lazySeek();\n            ensureStreamOpen();\n            int data = bufferedStream.read();\n            if (data != -1) {\n                nextReadPos++;\n                streamPos++;\n            }\n            return data;\n        } finally {\n            lock.unlock();\n        }\n    }\n\n    @Override\n    public int read(byte[] b, int off, int len) throws IOException {\n        if (b == null) {\n            throw new NullPointerException(\"Read buffer must not be null\");\n        }\n        if (off < 0 || len < 0 || len > b.length - off) {\n            throw new IndexOutOfBoundsException(\n                    String.format(\n                            \"Range [off=%d, len=%d] out of bounds for buffer of length %d\",\n                            off, len, b.length));\n        }\n        if (len == 0) {\n            return 0;\n        }\n        lock();\n        try {\n            if (closed) {\n                throw new IOException(\"Stream is closed\");\n            }\n            if (nextReadPos >= contentLength) {\n                return -1;\n            }","sourceCodeStart":291,"sourceCodeEnd":327,"githubUrl":"https://github.com/apache/flink/blob/2f3c205e9266cb30240eb7f4fdab15cad629a70f/flink-filesystems/flink-s3-fs-native/src/main/java/org/apache/flink/fs/s3native/NativeS3InputStream.java#L291-L327","documentation":"Error \"Read buffer must not be null\" thrown in apache/flink.","triggerScenarios":"Triggered at runtime when the operation fails because: Read buffer must not be null.","commonSituations":"Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Read buffer must not be null.","solutions":["Address the cause reported by the error message: Read buffer must not be null","Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry."],"exampleFix":"Correct the condition described (\"Read buffer must not be null\") 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"}