What is the canonicalname field in a Schema object used for?

[Jonathan Coveney]

If you do:

Schema s1 = Utils.getSchemaFromString(
"b:bag{t:tuple(name:chararray,age:int)}");


then it will all be -1'd out. It doesn't seem to be used anywhere, I was
just wondering, since in other case, it will be populated properly.


Thanks

Jon