count function in split statement

[Johannes Zillmann]

Hi there,

just wondering if something like this is/should be possible ? :
A=
(a, {(a, 1), (a, 2), (a, 3)})
(a, {})
split A into B if (count($1)==3), C;

Trying this gives me an exception:
Caused by: org.apache.pig.impl.logicalLayer.parser.ParseException: could 
not instantiate 'count' with arguments '[]'
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.EvalFunction(QueryParser.java:2597)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.FuncEvalSpec(QueryParser.java:2134)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.BaseEvalSpec(QueryParser.java:2010)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.UnaryExpr(QueryParser.java:1955)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.MultiplicativeExpr(QueryParser.java:1886)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.AdditiveExpr(QueryParser.java:1818)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.InfixExpr(QueryParser.java:1786)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.PUnaryCond(QueryParser.java:890)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.PAndCond(QueryParser.java:835)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.POrCond(QueryParser.java:785)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.PCond(QueryParser.java:753)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.PUnaryCond(QueryParser.java:887)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.PAndCond(QueryParser.java:835)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.POrCond(QueryParser.java:785)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.PCond(QueryParser.java:753)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.SplitClause(QueryParser.java:295)
   at 
org.apache.pig.impl.logicalLayer.parser.QueryParser.Parse(QueryParser.java:249)
   at 
org.apache.pig.impl.logicalLayer.LogicalPlanBuilder.parse(LogicalPlanBuilder.java:47)
   at org.apache.pig.PigServer.registerQuery(PigServer.java:237)
   ... 17 more

Johanne

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