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https://issues.apache.org/jira/browse/PIG-433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Santhosh Srinivasan updated PIG-433:
------------------------------------
Attachment: PIG-433.patch
Attached patch (PIG-433.patch) fixes the following:
1. Parser now handles the AS clause with flatten without requiring the
additional ( ). Without the parenthesis, only the first column will be
re-aliased
2. When bags or tuples without schemas are flattened and user provides an
alias, the default type is set to bytearray. This part was omitted in an
earlier fix.
All unit tests pass.
> aliasing flatten requires parenthesis around alias
> --------------------------------------------------
>
> Key: PIG-433
> URL: https://issues.apache.org/jira/browse/PIG-433
> Project: Pig
> Issue Type: Bug
> Affects Versions: types_branch
> Reporter: Olga Natkovich
> Assignee: Santhosh Srinivasan
> Fix For: types_branch
>
> Attachments: PIG-433.patch
>
>
> Script:
> a = load 'data' as (name, age, gpa);
> b = foreach a generate flatten(name) as foo;
> Error:
> 08/09/16 09:21:19 ERROR grunt.GruntParser: java.io.IOException: Encountered
> "foo" at line 1, column 41.
> Was expecting:
> "(" ...
>
> at org.apache.pig.PigServer.parseQuery(PigServer.java:293)
> at org.apache.pig.PigServer.registerQuery(PigServer.java:258)
> at
> org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:432)
> at
> org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:242)
> at
> org.apache.pig.tools.grunt.GruntParser.parseContOnError(GruntParser.java:93)
> at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:58)
> at org.apache.pig.Main.main(Main.java:282)
> Caused by: org.apache.pig.impl.logicalLayer.parser.ParseException:
> Encountered "foo" at line 1, column 41.
> Was expecting:
> "(" ...
>
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.generateParseException(QueryParser.java:7656)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.jj_consume_token(QueryParser.java:7533)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.FlattenedGenerateItem(QueryParser.java:3522)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.FlattenedGenerateItemList(QueryParser.java:3456)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.GenerateStatement(QueryParser.java:3413)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.NestedBlock(QueryParser.java:2899)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.ForEachClause(QueryParser.java:2302)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.BaseExpr(QueryParser.java:953)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.Expr(QueryParser.java:728)
> at
> org.apache.pig.impl.logicalLayer.parser.QueryParser.Parse(QueryParser.java:529)
> at
> org.apache.pig.impl.logicalLayer.LogicalPlanBuilder.parse(LogicalPlanBuilder.java:60)
> at org.apache.pig.PigServer.parseQuery(PigServer.java:290)
> ... 6 more
> This a regression!
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