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https://issues.apache.org/jira/browse/PIG-1588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12905224#action_12905224
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Laukik Chitnis commented on PIG-1588:
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PIG-1586 is about investigating if the shell script is messing the parameter
values. This jira is about the format of the parameter value itself. Even when
we pass the parameter value through a pig param file, we need to escape the $0,
$1 etc with \\$0, \\$1 etc, which was not the case in earlier versions of Pig.
> Parameter pre-processing of values containing pig positional variables ($0,
> $1 etc)
> -----------------------------------------------------------------------------------
>
> Key: PIG-1588
> URL: https://issues.apache.org/jira/browse/PIG-1588
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.7.0
> Reporter: Laukik Chitnis
> Fix For: 0.7.0
>
>
> Pig 0.7 requires the positional variables to be escaped by a \\ when passed
> as part of a parameter value (either through cmd line param or through
> param_file), which was not the case in Pig 0.6 Assuming that this was not an
> intended breakage of backward compatibility (could not find it in release
> notes), this would be a bug.
> For example, We need to pass
> INPUT=CountWords(\\$0,\\$1,\\$2)
> instead of simply
> INPUT=CountWords($0,$1,$2)
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