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From "Cheolsoo Park (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-3418) ; in constant breaks parsing
Date Wed, 14 Aug 2013 17:09:50 GMT

    [ https://issues.apache.org/jira/browse/PIG-3418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739890#comment-13739890
] 

Cheolsoo Park commented on PIG-3418:
------------------------------------

I will backport PIG-2507 to 0.11.2. Please let me know if anyone has objections. Thanks!
                
> ; in constant breaks parsing
> ----------------------------
>
>                 Key: PIG-3418
>                 URL: https://issues.apache.org/jira/browse/PIG-3418
>             Project: Pig
>          Issue Type: Bug
>          Components: parser
>            Reporter: Sergey
>            Priority: Blocker
>             Fix For: 0.11
>
>
> Hi. 
> 1. If you use ; in pig script it breaks parsing
> 2. It's impossible to pass ; as a value for parameter. Pig starts grunt and doesn't start
script.
> Here is example:
> {code}
> A = LOAD 'myFile';
> B = FOREACH A GENERATE ( host == ';' ? 1 : 0); --line #5
> {code}
> Here is stacktrace:
> {code}
> Pig Stack Trace
> ---------------
> ERROR 1200: <file test.pig, line 5, column 0>  mismatched character '<EOF>'
expecting '''
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1000: Error during parsing.
<file test.pig, line 5, column 0>  mismatched character '<EOF>' expecting '''
> 	at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1608)
> 	at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1547)
> 	at org.apache.pig.PigServer.registerQuery(PigServer.java:518)
> 	at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:991)
> 	at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:412)
> 	at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.j
> ava:194)
> 	at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:170)
> 	at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:84)
> 	at org.apache.pig.Main.run(Main.java:604)
> 	at org.apache.pig.Main.main(Main.java:157)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:616)
> 	at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
> Caused by: Failed to parse: <file test.pig, line 5, column 0>  mismatched character
'<EOF>' expecting '''
> 	at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:237)
> 	at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:177)
> 	at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1600)
> 	... 14 more                
> {code}
> This also would not run.
> {code}
> pig -p param=; some_pig_script.pig
> {code}
> grunt would be launched.

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