[ https://issues.apache.org/jira/browse/PIG-920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Ding reassigned PIG-920: -------------------------------- Assignee: Richard Ding > optimizing diamond queries > -------------------------- > > Key: PIG-920 > URL: https://issues.apache.org/jira/browse/PIG-920 > Project: Pig > Issue Type: Improvement > Reporter: Olga Natkovich > Assignee: Richard Ding > > The following query > A = load 'foo'; > B = filer A by $0>1; > C = filter A by $1 = 'foo'; > D = COGROUP C by $0, B by $0; > ...... > does not get efficiently executed. Currently, it runs a map only job that > basically reads and write the same data before doing the query processing. > Query where the data is loaded twice actually executed more efficiently. > This is not an uncommon query and we should fix this issue. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.