return value
If there is no return value, an error will be thrown and an error message will be output. By () getLastErrMsg get an error message, via ) getLastError ( to get the error code. For error handling, please refer to the common error handling guide .
error
The error information is recorded in the node diagnosis log (diaglog), and you can refer to the error code .
Example
Create a "hostname1:11830" node in the partition group group1, and specify the log file size as 64MB
var rg = db.getRG("group1")
rg.createNode( "hostname1", 11830, "/opt/sequoiadb/database/data/11830", { logfilesz: 64 } )Note:
Multiple nodes can be created in a partition group, and each node needs to reserve at least five extended ports. Because the system controls five communication interfaces for each node background.
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