{"record":{"id":"b167042c7e92dc44","repo":"apache/flink","slug":"error-reconstructing-uri","errorCode":null,"errorMessage":"Error reconstructing URI","messagePattern":"Error reconstructing URI","errorType":"exception","errorClass":"IOException","httpStatus":null,"severity":"error","filePath":"flink-core/src/main/java/org/apache/flink/core/fs/Path.java","lineNumber":523,"sourceCode":"     * @throws IOException if an error happened.\n     */\n    @Nullable\n    public static Path deserializeFromDataInputView(DataInputView in) throws IOException {\n        final boolean isNotNull = in.readBoolean();\n        Path result = null;\n        if (isNotNull) {\n            final String scheme = StringUtils.readNullableString(in);\n            final String userInfo = StringUtils.readNullableString(in);\n            final String host = StringUtils.readNullableString(in);\n            final int port = in.readInt();\n            final String path = StringUtils.readNullableString(in);\n            final String query = StringUtils.readNullableString(in);\n            final String fragment = StringUtils.readNullableString(in);\n\n            try {\n                result = new Path(new URI(scheme, userInfo, host, port, path, query, fragment));\n            } catch (URISyntaxException e) {\n                throw new IOException(\"Error reconstructing URI\", e);\n            }\n        }\n        return result;\n    }\n\n    /**\n     * Serialize the path to {@link DataInputView}.\n     *\n     * @param path the file path.\n     * @param out the data out put view.\n     * @throws IOException if an error happened.\n     */\n    public static void serializeToDataOutputView(Path path, DataOutputView out) throws IOException {\n        URI uri = path.toUri();\n        if (uri == null) {\n            out.writeBoolean(false);\n        } else {\n            out.writeBoolean(true);","sourceCodeStart":505,"sourceCodeEnd":541,"githubUrl":"https://github.com/apache/flink/blob/2f3c205e9266cb30240eb7f4fdab15cad629a70f/flink-core/src/main/java/org/apache/flink/core/fs/Path.java#L505-L541","documentation":"Thrown during Path deserialization from a DataInputView when the 7-component URI (scheme, userInfo, host, port, path, query, fragment) read back from the stream does not form a syntactically valid URI. It wraps the underlying URISyntaxException in an IOException so the failure is visible to serialization callers.","triggerScenarios":"Reading a serialized Path whose stored components were corrupted, truncated, or written by a mismatched serialization version. `Path.deserializeFromDataInputView(in)` reconstructs via `new URI(...)` which validates syntax.","commonSituations":"State/checkpoint corruption; a Flink version upgrade changed serialization format; reading a stream that was partially written or truncated across a checkpoint boundary; reading data serialized by a different (older/newer) Flink release.","solutions":["Verify the source of the DataInputView is intact and complete (not truncated mid-record).","Confirm the writer and reader use the same Flink version, or run a state/savepoint migration path.","Inspect the wrapped URISyntaxException in the cause chain for the exact malformed component.","If state is unrecoverable, restart from a known-good checkpoint or savepoint."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"try {\n    Path p = Path.deserializeFromDataInputView(in);\n} catch (IOException e) {\n    // inspect e.getCause() which is the URISyntaxException\n    if (e.getCause() instanceof URISyntaxException) { /* handle corruption */ }\n    throw e;\n}","preventionTips":["Pin writer and reader to the same Flink version to avoid format drift.","Validate checkpoint/savepoint integrity before relying on it for restore.","Capture the wrapped URISyntaxException to pinpoint the malformed component."],"tags":["serialization","deserialization","uri","state","corruption"],"backgroundTag":null,"analyzedSha":"2f3c205e9266cb30240eb7f4fdab15cad629a70f","analyzedAt":"2026-08-14T08:48:24.518Z","schemaVersion":2},"datasetVersion":"2026-08-14T10:17:34.591Z"}