Paddy Gu

client module does not support authentication such as Kerberos now.

[feat][jdbc]init column info in client

1

## Purpose of this pull request To ensure that the serializer works correctly, the DataType needs to be confirmed before the client generates the TypeInfomation ## Which issue you fix...

## Purpose of this pull request Split BigDecimalColumn into ShortColumn, IntColumn, LongColumn, FloatColumn, and DoubleColumn - Corrected some incorrect type mappings - Optimized part of the serialization code ## Which...

### Search before asking - [X] I had searched in the [issues](https://github.com/DTStack/chunjun/issues) and found no similar feature requirement. ### Description 1. Java.math.bigdecimal (String) constructor has poor performance 2. Now float,...