[ https://issues.apache.org/jira/browse/PIG-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Dai updated PIG-1165: ---------------------------- Resolution: Fixed Hadoop Flags: [Reviewed] Status: Resolved (was: Patch Available) Patch committed to both trunk and 0.6 branch. > Signature of loader does not set correctly for order by > ------------------------------------------------------- > > Key: PIG-1165 > URL: https://issues.apache.org/jira/browse/PIG-1165 > Project: Pig > Issue Type: Bug > Components: impl > Affects Versions: 0.6.0 > Reporter: Daniel Dai > Assignee: Daniel Dai > Fix For: 0.6.0 > > Attachments: PIG-1165-1.patch > > > In pig, we need to set signature for each LoadFunc. Currently, we use alias > of the LOAD statement in Pig script of the signature of the LoadFunc. One use > case we have is in LoadFunc, we use signature to retrieve pruned columns of > each specific loader. However, in "order by" statement, we do not set > signature for the loader correctly. In this case, we do not prune the loader > correctly. > For example, the following script produce wrong result: > {code} > a = load '1.txt' as (a0, a1); > b = order a by a1; > c = order b by a1; > d = foreach c generate a1; > dump d; > {code} > 1.txt: > {code} > 1 a > 2 b > 3 c > 6 d > 5 e > {code} > expected result: > a > b > c > d > e > current result: > 1 > 2 > 3 > 5 > 6 -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.