Column里加个name字段

exam:

``

public abstract class Column {

private Type type;

private String name;

private Object rawData;

private int byteSize;

public Column(final Object object, final Type type, int byteSize) {
this(null, object, type, byteSize);
}

public Column(final String name, final Object object, final Type type, int byteSize) {
this.name = name;
this.rawData = object;
this.type = type;
this.byteSize = byteSize;
}
}
``
另外官方也出一个rocketmqwriter呗

Locate the Column class and inspect how its constructors and fields are used before assessing the requested name field. Separately trace the existing writer entry points to define the scope of an official RocketMQ writer; done requires both requests to have an agreed implementation scope and validation coverage.

Written by the indexing model from the issue text.