[jira] [Created] (PIG-4897) Scope of param substitution for run/exec commands

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

Koji Noguchi created PIG-4897:
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             Summary: Scope of param substitution for run/exec commands
                 Key: PIG-4897
                 URL: https://issues.apache.org/jira/browse/PIG-4897
             Project: Pig
          Issue Type: Bug
            Reporter: Koji Noguchi
            Assignee: Koji Noguchi


After PIG-3359, pig param substitution became global in that parameter declared in the pig script called from {{run}} or {{exec}} would live after that script finishes.  

This created an interesting situation.
{code:title=test1.pig}
exec -param output=/tmp/deleteme111 test1_1.pig
exec -param output=/tmp/deleteme222 test1_1.pig
{code}

{code:title=test1_1.pig}
%default myout '$output.out';
A = load 'input.txt' as (a0:int);
store A into '$myout';
{code}

Running {{test1.pig}} would try to run two jobs that both tries to write to /tmp/deleteme111 and fail.  (Second param output=/tmp/deleteme222 is ignored.)



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