Summary: 9 instances, 9 unique

Text	Count
//TODO: add IT	1
* TODO: 1. support backend task run; 2. support dispatch task to remote node	1
//TODO: rename ColumnType as DataType	1
* TODO: Add more test	1
// TODO: put the user into model for backend role based access control.	1
//TODO: remove this class, use MLModel	1
private User user; // TODO: support document level access control later	1
//TODO: support calculate sum/max/min value from index.	1
//TODO: expose number of thread and seed?	1