Bad error message when period rather than comma appears as separator in UDF
parameter list
-------------------------------------------------------------------------------------------
Key: PIG-618
URL: https://issues.apache.org/jira/browse/PIG-618
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: types_branch
Reporter: Viraj Bhat
Fix For: types_branch
Pig script generates the following compile-time error as it contains a period
between 0.8 and 0.9 in the MYUDF parameter list. The "Invalid alias MYUDF"
message should be changed to something that is more meaningful for the user to
trace.
{code}
register 'MYUDF.jar';
A = load 'mydata.txt' using PigStorage() as (
col1: int,
col2: chararray,
col3: long,
col4: int
);
B = group A by (
col1,
col2
);
C = foreach B generate
group,
MYUDF(A.col3, 0.0, 0.8. 0.9) as stat: (min, max);
describe C;
{code}
========================================================================================================
java.io.IOException: Invalid alias: MYUDF in {group: (col1: int,col2:
chararray),A: {col1: int,col2: chararray,col
3: long,col4: int}}
at org.apache.pig.PigServer.parseQuery(PigServer.java:301)
at org.apache.pig.PigServer.registerQuery(PigServer.java:266)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:439)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:249)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:84)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:64)
at org.apache.pig.Main.main(Main.java:306)
Caused by: org.apache.pig.impl.logicalLayer.parser.ParseException: Invalid
alias: MYUDF in {group: (col1: int,col2
: chararray),A: {col1: int,col2: chararray,col3: long,col4: int}}
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.AliasFieldOrSpec(QueryParser.java:6005)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.ColOrSpec(QueryParser.java:5863)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.BaseEvalSpec(QueryParser.java:4049)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.UnaryExpr(QueryParser.java:3946)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.CastExpr(QueryParser.java:3900)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.MultiplicativeExpr(QueryParser.java:3809)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.AdditiveExpr(QueryParser.java:3735)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.InfixExpr(QueryParser.java:3701)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.FlattenedGenerateItem(QueryParser.java:3627)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.FlattenedGenerateItemList(QueryParser.java:3550)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.GenerateStatement(QueryParser.java:3494)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.NestedBlock(QueryParser.java:2969)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.ForEachClause(QueryParser.java:2384)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.BaseExpr(QueryParser.java:1019)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.Expr(QueryParser.java:795)
at
org.apache.pig.impl.logicalLayer.parser.QueryParser.Parse(QueryParser.java:590)
at
org.apache.pig.impl.logicalLayer.LogicalPlanBuilder.parse(LogicalPlanBuilder.java:60)
at org.apache.pig.PigServer.parseQuery(PigServer.java:298)
========================================================================================================
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