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Posted to dev@pig.apache.org by "Johnny Zhang (JIRA)" <ji...@apache.org> on 2013/02/21 00:25:13 UTC
[jira] [Assigned] (PIG-2630) Issue with setting "b = a;"
[ https://issues.apache.org/jira/browse/PIG-2630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Johnny Zhang reassigned PIG-2630:
---------------------------------
Assignee: Johnny Zhang
> Issue with setting "b = a;"
> ---------------------------
>
> Key: PIG-2630
> URL: https://issues.apache.org/jira/browse/PIG-2630
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.10.0, 0.11
> Reporter: Jonathan Coveney
> Assignee: Johnny Zhang
> Fix For: 0.12
>
>
> The following gives an error:
> {code}
> a = load 'thing' as (x:int);
> b = a; c = join a by x, b by x;
> {code}
> Error:
> {code}
> 2012-04-03 14:02:47,434 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1200: Pig script failed to parse:
> <line 14, column 4> pig script failed to validate: org.apache.pig.impl.logicalLayer.FrontendException: ERROR 2225: Projection with nothing to reference!
> {code}
> No issue with the following, however
> {code}
> a = load 'thing' as (x:int);
> b = foreach a generate *;
> c = join a by x, b by x;
> {code}
> oh and here is the log:
> {code}
> $ cat pig_1333487146863.log
> Pig Stack Trace
> ---------------
> ERROR 1200: Pig script failed to parse:
> <line 3, column 4> pig script failed to validate: org.apache.pig.impl.logicalLayer.FrontendException: ERROR 2225: Projection with nothing to reference!
> Failed to parse: Pig script failed to parse:
> <line 3, column 4> pig script failed to validate: org.apache.pig.impl.logicalLayer.FrontendException: ERROR 2225: Projection with nothing to reference!
> at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:182)
> at org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1566)
> at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1539)
> at org.apache.pig.PigServer.registerQuery(PigServer.java:541)
> at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:945)
> at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:392)
> at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:190)
> at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:166)
> at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
> at org.apache.pig.Main.run(Main.java:535)
> at org.apache.pig.Main.main(Main.java:153)
> Caused by:
> <line 3, column 4> pig script failed to validate: org.apache.pig.impl.logicalLayer.FrontendException: ERROR 2225: Projection with nothing to reference!
> at org.apache.pig.parser.LogicalPlanBuilder.buildJoinOp(LogicalPlanBuilder.java:363)
> at org.apache.pig.parser.LogicalPlanGenerator.join_clause(LogicalPlanGenerator.java:11441)
> at org.apache.pig.parser.LogicalPlanGenerator.op_clause(LogicalPlanGenerator.java:1491)
> at org.apache.pig.parser.LogicalPlanGenerator.general_statement(LogicalPlanGenerator.java:791)
> at org.apache.pig.parser.LogicalPlanGenerator.statement(LogicalPlanGenerator.java:509)
> at org.apache.pig.parser.LogicalPlanGenerator.query(LogicalPlanGenerator.java:384)
> at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:175)
> ... 10 more
> ================================================================================
> {code}
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