OK. I have simplified the script and tried 2 different ways without success:
1) B = foreach A generate flatten($0), SUM($0.a) ; 2) B = foreach A generate flatten($0), SUM(a) ; Which both produce different errors(see below)? Thanks, John Data: cat v.log 1 2 3 4 Complete script 1 with error: A = LOAD 'v.log' AS (a:double) ; dump A; B = foreach A generate flatten($0), SUM($0.a) ; dump B; Error for above script: 2012-05-17 20:54:11,836 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1000: Error during parsing. Invalid alias: a in null Complete script 2 with error: A = LOAD 'v.log' AS (a:double) ; dump A; B = foreach A generate flatten($0), SUM(a) ; dump B; 2012-05-17 20:56:11,795 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1045: Could not infer the matching function for org.apache.pig.builtin.SUM as multiple or none of them fit. Please use an explicit cast. On Thu, May 17, 2012 at 6:31 PM, Jonathan Coveney <[email protected]>wrote: > I imagine the issue is that you're not giving it a bag... can you paste the > whole script? That said, my guess is that this comes right after a group > by, and that the following will fix it: > > C = foreach B generate flatten($0), sum($0.lane_nbr) ; > > but I'd need the whole script to be sure > > 2012/5/17 John Morrison <[email protected]> > > > OK. New problem with needing to use explicit cast? > > > > Could you give me syntax for explict cast? > > > > 2012-05-17 15:29:13,769 [main] ERROR org.apache.pig.tools.grunt.Grunt - > > ERROR 1046: Multiple matching functions for org.apache.pig.builtin.SUM > with > > input schema: ({{bytearray}}, {{double}}). Please use an explicit cast. > > > > > > > > On Thu, May 17, 2012 at 11:42 AM, Prashant Kommireddi > > <[email protected]>wrote: > > > > > UDFs are case-sensitive. It should be all caps - SUM > > > > > > Can you please give that a try? > > > > > > > > > On May 17, 2012, at 8:24 AM, John Morrison <[email protected]> > > > wrote: > > > > > > > Hi, > > > > > > > > I am new to ping and am unable to use pig builtin functions (please > see > > > > details below). > > > > > > > > Is this a CLASSPATH issue? > > > > > > > > Any ideas on how to resolve? > > > > > > > > Thanks, > > > > > > > > John > > > > > > > > Details > > > > > > > > ### Line in pig script causing issue > > > > C = foreach B generate flatten($0), sum(lane_nbr) ; > > > > > > > > ### Error message > > > > 2012-05-17 11:15:41,673 [main] ERROR org.apache.pig.tools.grunt.Grunt > > - \ > > > > ERROR 1070: Could not resolve sum using imports: [, > > > > org.apache.pig.builtin., org.apache.pig.impl.builtin.] > > > > > > > > pig -version > > > > Apache Pig version 0.8.1-cdh3u3 (rexported) > > > > > > > > > > > -- > > John Morrison > > > -- John Morrison
