Hi, I am writing my own custom serde to write data to an external table. In serialize() method of my serde I am handed over an object and an object Inspector. Since this object represents a row, I make an assumption that object Inspector is of type StructObjectInspector and then I get fields out of this struct using struct Object inspector. When I do field.getFieldName() on it I expect it will give me the real column name as contained in my table schema in metastore. But, instead I get names like _col1, _col2, _col3 ..
Now the workaround for it is to store the column names in a list in initialize() method and then use that list to get names in serialize(). This is what I am doing now and it works. It seems hbase serde is also doing similar thing. But, it was counter intuitive to me not to expect to get the real column names in getFieldName() but rather some random made up names. If this is not the expected behavior then potentially I am doing something wrong in my serde.. if so I will appreciate if some one confirms that.. But if this is how things are implemented currently.. then I think its a bug and I will open a jira for it.. Thanks, Ashutosh PS: I am posting it on dev-list But if folks think its more appropriate for user-list, feel free to move it there, while replying to it.
