No one replied on dev list. Reposting on user list. If I am unclear, let me know and I will provide more details of my use case.
Ashutosh On Fri, May 21, 2010 at 12:22, Ashutosh Chauhan <[email protected]> wrote: > 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. >
