Oh, I am wrong. SIZE is the right UDF to use. The issue is caused by
TupleSize, as Eric points out a moment ago.
Daniel
Dmitriy Ryaboy wrote:
Daniel, if that's actually the case we need to fix the javadocs. Cause
they are pretty explicit...
/**
* Find the number of fields in a tuple. Expected input is a tuple,
* output is an integer.
* @deprecated Use {@link SIZE} instead.
*/
public class ARITY extends EvalFunc<Integer> {
On Tue, Feb 1, 2011 at 12:10 PM, Daniel Dai <[email protected]> wrote:
You cannot get size of tuple using SIZE. Use ARITY instead.
Daniel
Xavier Stevens wrote:
I've written a regular expression EvalFunc similar to ExtractAll except
this is called FindAll. It returns a tuple of all strings found that
match the given pattern. The syntax looks like this:
A = FOREACH raw_data GENERATE FindAll(field_str, '[^/]+') AS a_tuple;
I dumped some return tuples which look something like this:
((a,b,c,d,e))
I'm trying to get the size of the tuple so I can filter out certain
entries. If I simply do:
B = FOREACH A GENERATE SIZE(a_tuple);
DUMP B;
I always get a size of 1. I thought maybe this was due to the
surrounding bag so I tried to FLATTEN(FindAll(...)). Now I'm getting an
error from SIZE saying it can't convert a string to a DataBag.
Any idea what's going on here?
Thanks,
-Xavier
