{"record":{"id":"67a4d51a665a4bd0","repo":"apache/seatunnel","slug":"connect-failed-67a4d5","errorCode":"CONNECT_FAILED","errorMessage":"Failed to initialize DatabendSinkAggregatedCommitter: {e.getMessage()}","messagePattern":"Failed to initialize DatabendSinkAggregatedCommitter: (.+?)","errorType":"error_code","errorClass":"DatabendConnectorException","httpStatus":null,"severity":"critical","filePath":"seatunnel-connectors-v2/connector-databend/src/main/java/org/apache/seatunnel/connectors/seatunnel/databend/sink/DatabendSinkAggregatedCommitter.java","lineNumber":111,"sourceCode":"\n            this.connection = DatabendUtil.createConnection(databendSinkConfig);\n            log.info(\n                    \"[Instance {}] Databend connection created successfully: {}\",\n                    instanceId,\n                    connection);\n\n            // CDC infrastructure is now initialized in DatabendSink.setJobContext\n            // Just log that we're in CDC mode\n            if (isCdcMode) {\n                log.info(\"[Instance {}] Running in CDC mode\", instanceId);\n            }\n        } catch (SQLException e) {\n            log.error(\n                    \"[Instance {}] Failed to initialize DatabendSinkAggregatedCommitter: {}\",\n                    instanceId,\n                    e.getMessage(),\n                    e);\n            throw new DatabendConnectorException(\n                    DatabendConnectorErrorCode.CONNECT_FAILED,\n                    \"Failed to initialize DatabendSinkAggregatedCommitter: \" + e.getMessage(),\n                    e);\n        } catch (Exception e) {\n            log.error(\n                    \"[Instance {}] Unexpected error during initialization: {}\",\n                    instanceId,\n                    e.getMessage(),\n                    e);\n            throw e;\n        }\n    }\n\n    private String getCurrentTimestamp() {\n        return LocalDateTime.now().format(DateTimeFormatter.ofPattern(\"yyyyMMddHHmmssSSS\"));\n    }\n\n    @Override","sourceCodeStart":93,"sourceCodeEnd":129,"githubUrl":"https://github.com/apache/seatunnel/blob/cf67b549a7a6c35fa0beb12d83c62892427ea919/seatunnel-connectors-v2/connector-databend/src/main/java/org/apache/seatunnel/connectors/seatunnel/databend/sink/DatabendSinkAggregatedCommitter.java#L93-L129","documentation":"DatabendSinkAggregatedCommitter.init failed to acquire its JDBC connection or prepare commit state, wrapped as CONNECT_FAILED. The committer aggregates writer results and commits them; without initialization the job cannot commit. The exception is logged with the instance id and rethrown with the original cause.","triggerScenarios":"init opening a Databend connection via the configured options and receiving a SQLException — unreachable server, bad credentials, or driver misconfiguration.","commonSituations":"Databend temporarily down or restarting when the job reaches commit stage; credentials changed between job submit and commit; network policy blocking the driver on the coordinator node.","solutions":["Verify Databend connectivity and credentials on the node running the committer","Retry the job; transient outages during init are the most common cause","Check the cause's message for auth vs. network errors and fix the sink config accordingly","Ensure the sink url/username/password are identical across writers and committers"],"exampleFix":null,"handlingStrategy":"retry","validationCode":"try (Connection c = DriverManager.getConnection(url, user, pass)) {\n    if (!c.isValid(5)) throw new IllegalStateException(\"Databend unreachable\");\n}","typeGuard":null,"tryCatchPattern":"try {\n    // job with aggregated commit\n} catch (DatabendConnectorException e) {\n    if (e.getErrorCode() == DatabendConnectorErrorCode.CONNECT_FAILED\n            && e.getMessage().contains(\"AggregatedCommitter\")) {\n        // retry with backoff after verifying Databend availability\n    } else { throw e; }\n}","preventionTips":["Monitor Databend availability during job runs","Ensure committer nodes can reach the Databend endpoint","Use consistent, verified credentials for the entire job lifecycle"],"tags":["databend","jdbc","connection","committer"],"backgroundTag":"connection-refused","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"}