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https://issues.apache.org/jira/browse/PIG-4897?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koji Noguchi updated PIG-4897:
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Attachment: pig-4897-v09.patch
bq. We shall also document it.
Added. Please check my English to see if it makes sense.
bq. There are some test failures with TestMacroExpansion. Can you look into
them?
Worked around the issue by skipping scoping when the 'loadscript' method is
called outside of run/exec.
But more I look, I cannot wait to drop javacc in PIG-2597...
> 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
> Attachments: pig-4897-v01-notestyet.patch, pig-4897-v02.patch,
> pig-4897-v03.patch, pig-4897-v04.patch, pig-4897-v05.patch,
> pig-4897-v06.patch, pig-4897-v07.patch, pig-4897-v08.patch, pig-4897-v09.patch
>
>
> 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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