Syntax error when line break and tab involved
---------------------------------------------
Key: PIG-2414
URL: https://issues.apache.org/jira/browse/PIG-2414
Project: Pig
Issue Type: Bug
Affects Versions: 0.9.0, 0.8.1
Reporter: Anitha Raju
Hi,
The following script fails with syntax error
Script
{code}
A = load 'test.txt' as (a:int,b:long);
B = group A by a;
C = foreach B generate
flatten((IsEmpty(A) ? {(0)} : {(1)}));
{code}
where "generate" and "flatten" are separated by line break and a tab.
This script fails with the following exception
{code}
ERROR 1200: <file bug.pig, line 4, column 8> Syntax error, unexpected symbol
at or near '('
Failed to parse: <file bug.pig, line 4, column 8> Syntax error, unexpected
symbol at or near '('
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:222)
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:164)
at org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1609)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1582)
at org.apache.pig.PigServer.registerQuery(PigServer.java:584)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:939)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:386)
at
org.apache.pig.tools.grunt.GruntParser.loadScript(GruntParser.java:516)
at
org.apache.pig.tools.grunt.GruntParser.processExplain(GruntParser.java:314)
at org.apache.pig.tools.grunt.Grunt.checkScript(Grunt.java:95)
at org.apache.pig.Main.run(Main.java:557)
at org.apache.pig.Main.main(Main.java:111)
{code}
Even without flatten it would fail.
-------------
((IsEmpty(A) ? {(0)} : {(1)}));
-------------
Here are some cases where it would work
-> flatten put in the same line as foreach (tab or space seperated)
{code}
A = load 'test.txt' as (a:int,b:long);
B = group A by a;
C = foreach B generate flatten((IsEmpty(A) ? {(0)} : {(1)}));
{code}
-> a space and a line break and a tab between flatten and generate, the script
passes
{code}
A = load 'test.txt' as (a:int,b:long);
B = group A by a;
C = foreach B generate <space>
flatten((IsEmpty(A) ? {(0)} : {(1)}));
{code}
This fails with both 0.8 and 0.9.
Regards,
Anitha
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