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https://issues.apache.org/jira/browse/PIG-267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12604912#action_12604912
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Pi Song commented on PIG-267:
-----------------------------
I see. Will fix that.
> Don't substitute parameters inside comments
> -------------------------------------------
>
> Key: PIG-267
> URL: https://issues.apache.org/jira/browse/PIG-267
> Project: Pig
> Issue Type: Bug
> Reporter: Amir Youssefi
> Priority: Trivial
> Attachments: Pig267_ParamFix.patch
>
>
> A script with $x in comments fails because Pig thinks it's an undefined
> parameter. One approach to address it is to skip substitution for comments.
> java.lang.RuntimeException: Undefined parameter : x
> at
> org.apache.pig.tools.parameters.PreprocessorContext.substitute(PreprocessorContext.java:221)
> at
> org.apache.pig.tools.parameters.ParameterSubstitutionPreprocessor.parsePigFile(ParameterSubstitutionPreprocessor.java:106)
> at
> org.apache.pig.tools.parameters.ParameterSubstitutionPreprocessor.genSubstitutedFile(ParameterSubstitutionPreprocessor.java:86)
> at org.apache.pig.Main.runParamPreprocessor(Main.java:382)
> at org.apache.pig.Main.main(Main.java:284)
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