{"record":{"id":"8652995f4f1415b8","repo":"apache/seatunnel","slug":"read-the-binlog-offset-error-865299","errorCode":null,"errorMessage":"Read the binlog offset error","messagePattern":"Read the binlog offset error","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"seatunnel-connectors-v2/connector-cdc/connector-cdc-sqlserver/src/main/java/org/apache/seatunnel/connectors/seatunnel/cdc/sqlserver/source/offset/LsnOffsetFactory.java","lineNumber":58,"sourceCode":"        this.dialect = dialect;\n    }\n\n    @Override\n    public Offset earliest() {\n        return LsnOffset.INITIAL_OFFSET;\n    }\n\n    @Override\n    public Offset neverStop() {\n        return LsnOffset.NO_STOPPING_OFFSET;\n    }\n\n    @Override\n    public Offset latest() {\n        try (JdbcConnection jdbcConnection = dialect.openJdbcConnection(sourceConfig)) {\n            return SqlServerUtils.currentLsn((SqlServerConnection) jdbcConnection);\n        } catch (Exception e) {\n            throw new RuntimeException(\"Read the binlog offset error\", e);\n        }\n    }\n\n    @Override\n    public Offset specific(Map<String, String> offset) {\n        return LsnOffset.valueOf(offset);\n    }\n\n    @Override\n    public Offset specific(String filename, Long position) {\n        throw new UnsupportedOperationException(\n                \"not supported create new Offset by filename and position.\");\n    }\n\n    @Override\n    public Offset timestamp(long timestamp) {\n        try (JdbcConnection jdbcConnection = dialect.openJdbcConnection(sourceConfig)) {\n            return SqlServerUtils.timestampToLsn(","sourceCodeStart":40,"sourceCodeEnd":76,"githubUrl":"https://github.com/apache/seatunnel/blob/cf67b549a7a6c35fa0beb12d83c62892427ea919/seatunnel-connectors-v2/connector-cdc/connector-cdc-sqlserver/src/main/java/org/apache/seatunnel/connectors/seatunnel/cdc/sqlserver/source/offset/LsnOffsetFactory.java#L40-L76","documentation":"Thrown by LsnOffsetFactory.latest() when opening the JDBC connection or computing SqlServerUtils.currentLsn() fails; the startup offset cannot be determined so the RuntimeException aborts the reader. It masks the underlying cause, so inspect the wrapped exception.","triggerScenarios":"Calling latest() when the SQL Server connection fails (bad credentials, unreachable host) or currentLsn() fails (permission denied on sys.dm/db catalog, query error, CDC not enabled on the database).","commonSituations":"Wrong username/password in config; login lacking VIEW DATABASE STATE / CDC access; AG failover mid-read; firewall dropping the connection during job start.","solutions":["Check the wrapped 'e' cause — usually connection or permission failure","Verify credentials/host/port and that the database is reachable from the job","Grant the login permission to query the current LSN (VIEW DATABASE STATE, CDC access)","Retry the job after any AG failover completes","Confirm the database has CDC enabled (is_cdc_enabled = 1)"],"exampleFix":"// before\n} catch (Exception e) {\n    throw new RuntimeException(\"Read the binlog offset error\", e);\n}\n// after\n} catch (Exception e) {\n    LOG.error(\"Failed to read current LSN; check connectivity and CDC permissions\", e);\n    throw new RuntimeException(\"Read the binlog offset error: \" + e.getMessage(), e);\n}","handlingStrategy":"try-catch","validationCode":"// preflight before job start\ntry (Connection c = DriverManager.getConnection(url, user, pass)) {\n    ResultSet rs = c.createStatement().executeQuery(\n        \"SELECT is_cdc_enabled FROM sys.databases WHERE name = DB_NAME()\");\n    rs.next();\n    if (rs.getInt(1) != 1) throw new IllegalStateException(\"CDC not enabled on database\");\n}","typeGuard":null,"tryCatchPattern":"try {\n    Offset o = offsetFactory.latest();\n} catch (RuntimeException e) {\n    Throwable cause = e.getCause();\n    LOG.error(\"Cannot determine current LSN; cause=\" + (cause == null ? \"?\" : cause.getMessage()));\n    throw e;\n}","preventionTips":["Validate credentials and network reachability before starting the job","Enable CDC on the database and grant the login required catalog/state permissions","Handle AG failover by restarting after topology stabilizes","Always log the wrapped cause — this message hides the real error"],"tags":["sqlserver","cdc","offset","jdbc"],"backgroundTag":"database-query-failed","analyzedSha":"cf67b549a7a6c35fa0beb12d83c62892427ea919","analyzedAt":"2026-09-10T21:44:55.265Z","contentChangedAt":"2026-09-10T21:44:55.265Z","schemaVersion":2},"datasetVersion":"2026-09-14T11:17:12.474Z"}