[ https://issues.apache.org/jira/browse/PIG-690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Pradeep Kamath updated PIG-690: ------------------------------- Fix Version/s: types_branch Assignee: Pradeep Kamath Affects Version/s: types_branch Status: Patch Available (was: Open) The root cause of the issue is while merging schemas, the code recursively merges subschemas if a field is a tuple or a bag. At that point, it does not properly attribute the type to be bag if that was the case. It always marks the type as tuple whenever the field schema is of type bag or tuple. This is fixed in the patch and a unit test case has been added which tries to union two relations which have a bag field. > UNION doesn't work in the latest code > ------------------------------------- > > Key: PIG-690 > URL: https://issues.apache.org/jira/browse/PIG-690 > Project: Pig > Issue Type: Bug > Affects Versions: types_branch > Environment: mapred mode. local mode.has the same problem under linux. > code is taken from trunk > Reporter: Amir Youssefi > Assignee: Pradeep Kamath > Fix For: types_branch > > Attachments: PIG-690.patch > > > grunt> a = load 'tmp/f1' using BinStorage(); > grunt> b = load 'tmp/f2' using BinStorage(); > grunt> describe a; > a: {int,chararray,int,{(int,chararray,chararray)}} > grunt> describe b; > b: {int,chararray,int,{(int,chararray,chararray)}} > grunt> c = union a,b; > grunt> describe c; > 2009-02-27 11:51:46,012 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR > 1052: Cannot cast bag with schema bag({(int,chararray,chararray)}) to tuple > with schema tuple > Details at logfile: /homes/amiry/pig_1235735380348.log > dump a and dump b work fine. > Sample data provided to dev team in an e-mail. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.