[jira] [Created] (PIG-4896) Param substitution ignored when redefined

["Koji Noguchi (JIRA)" <ji...@apache.org>]

Koji Noguchi created PIG-4896:
---------------------------------

             Summary: Param substitution ignored when redefined 
                 Key: PIG-4896
                 URL: https://issues.apache.org/jira/browse/PIG-4896
             Project: Pig
          Issue Type: Bug
          Components: parser
            Reporter: Koji Noguchi
            Priority: Minor


After PIG-3359, the way we cache parameter substitution results changed a bit.

{code:title=test.pig}
A = load 'input.txt' ;
%declare output '/tmp/abc';
%declare actualoutput '$output.out';
store A into '$actualoutput';

%declare output '/tmp/def';
%declare actualoutput '$output.out';
store A into '$actualoutput';

%declare number '1d';
%declare shellout `bash -c "date -v-$number +'%Y%m%d_%H:%S_%s'; sleep 1" `
store A into '$shellout';

%declare shellout `bash -c "date -v-$number +'%Y%m%d_%H:%S_%s'; sleep 1" `
store A into '$shellout';

%declare number '2d';
%declare shellout `bash -c "date -v-$number +'%Y%m%d_%H:%S_%s'; sleep 1" `
store A into '$shellout';
{code}

Result from pig 0.11 (almost correct)
{panel}
A = load 'input.txt' ;
store A into '/tmp/abc.out';
store A into '/tmp/def.out';
store A into '20160515_17:32_1463346752';
store A into '20160515_17:33_1463346753'; {color:red}NO{color}
store A into '20160514_17:34_1463260354';
{panel}
Result from trunk 
{panel}
A = load 'input.txt' ;
store A into '/tmp/abc.out';
store A into '/tmp/abc.out';  {color:red} NO{color}
store A into '20160515_15:10_1463338810';
store A into '20160515_15:10_1463338810';
store A into '20160515_15:10_1463338810'; {color:red}NO{color}
{panel}



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