{"record":{"id":"8fe07669ada0c887","repo":"apache/seatunnel","slug":"failed-to-get-response-from-doris","errorCode":null,"errorMessage":"Failed to get response from Doris","messagePattern":"Failed to get response from Doris","errorType":"exception","errorClass":"IOException","httpStatus":null,"severity":"error","filePath":"seatunnel-connectors-v2/connector-doris/src/main/java/org/apache/seatunnel/connectors/doris/rest/RestService.java","lineNumber":201,"sourceCode":"                Base64.getEncoder()\n                        .encodeToString(\n                                String.format(\"%s:%s\", user, passwd)\n                                        .getBytes(StandardCharsets.UTF_8));\n        connection.setRequestProperty(\"Authorization\", \"Basic \" + authEncoding);\n\n        connection.connect();\n        return parseResponse(connection, logger);\n    }\n\n    private static String parseResponse(HttpURLConnection connection, Logger logger)\n            throws IOException {\n        int responseCode = connection.getResponseCode();\n        if (responseCode != HttpStatus.SC_OK) {\n            logger.warn(\n                    \"Failed to get response from Doris {}, http code is {}\",\n                    connection.getURL(),\n                    responseCode);\n            throw new IOException(\"Failed to get response from Doris\");\n        }\n\n        StringBuilder result = new StringBuilder();\n        try (BufferedReader in =\n                new BufferedReader(\n                        new InputStreamReader(\n                                connection.getInputStream(), StandardCharsets.UTF_8))) {\n            String line;\n            while ((line = in.readLine()) != null) {\n                result.append(line);\n            }\n        }\n\n        return result.toString();\n    }\n\n    @VisibleForTesting\n    static String[] parseIdentifier(String tableIdentifier, Logger logger)","sourceCodeStart":183,"sourceCodeEnd":219,"githubUrl":"https://github.com/apache/seatunnel/blob/cf67b549a7a6c35fa0beb12d83c62892427ea919/seatunnel-connectors-v2/connector-doris/src/main/java/org/apache/seatunnel/connectors/doris/rest/RestService.java#L183-L219","documentation":"RestService.parseResponse throws this IOException whenever an HTTP request to a Doris FE node returns a status code other than 200 OK. It is a wrapper indicating the REST call to Doris failed at the HTTP transport level, with the actual code logged as a warning alongside the URL. Callers getConnectionPost/getConnectionGet propagate it, typically ending in findPartitions failure.","triggerScenarios":"A POST (query plan) or GET (schema/streamload metadata) request to a Doris FE node responds with non-200, e.g. 404 wrong endpoint path, 401/403 auth, 500 FE error, 502/503 proxy or FE down.","commonSituations":"Wrong query_port/query timeout config; FE reached via load balancer returning errors; Doris version changed REST API paths; FE overloaded or restarting; firewall returning HTML error pages with non-200 status.","solutions":["Check the logged URL and HTTP code to identify which FE node and status failed","Verify query_port (default 9030 for query, http port 8030 for REST) and fe nodes config in doris config","Curl the same URL manually from the SeaTunnel worker host to reproduce: curl -u user:pass http://fe:8030/api/...","Confirm FE is healthy (http://fe:8030/api/show_proc?path=/) and not behind a misconfigured proxy","Retry the job; transient FE restarts cause 502/503"],"exampleFix":"// before\nthrow new IOException(\"Failed to get response from Doris\");\n// after\nthrow new IOException(\"Failed to get response from Doris \" + connection.getURL() + \", http code \" + responseCode);","handlingStrategy":"retry","validationCode":"// Pre-check FE reachability\nHttpURLConnection c = (HttpURLConnection) new URL(\"http://\" + feHost + \":\" + httpPort + \"/api/show_proc?path=/\").openConnection();\nc.setConnectTimeout(3000);\nif (c.getResponseCode() != 200) throw new IllegalStateException(\"FE not healthy: \" + c.getResponseCode());","typeGuard":null,"tryCatchPattern":"try {\n    partitions = restService.findPartitions(...);\n} catch (DorisConnectorException | IOException e) {\n    // inspect root cause; retry against other FEs or fail fast\n    throw new JobExecutionException(\"Doris REST call failed, check FE health/ports\", e);\n}","preventionTips":["Use multiple fe_nodes for failover","Verify query_port vs HTTP port (8030) is correct","Curl endpoints from worker hosts before submitting jobs","Monitor FE health; avoid submitting during FE restarts"],"tags":["http","network","doris","rest"],"backgroundTag":"http-error-response","analyzedSha":"cf67b549a7a6c35fa0beb12d83c62892427ea919","analyzedAt":"2026-09-10T21:44:55.265Z","contentChangedAt":"2026-09-10T21:44:55.265Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}