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https://issues.apache.org/jira/browse/PIG-1827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13012717#comment-13012717
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Richard Ding commented on PIG-1827:
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The reason that one has to escape $ in this case is that Pig, by design, allows
recursive parameter substitution. That is, a parameter value can contain
another parameter key (prefixed by $). So if the value contains literal $, it
must be escaped.
> When passing a parameter to Pig, if the value contains $ it has to be escaped
> for no apparent reason
> ----------------------------------------------------------------------------------------------------
>
> Key: PIG-1827
> URL: https://issues.apache.org/jira/browse/PIG-1827
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.8.0
> Reporter: Julien Le Dem
>
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