[ https://issues.apache.org/jira/browse/PIG-480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ying He updated PIG-480: ------------------------ Attachment: PIG_480.patch fix the compilation error. > PERFORMANCE: Use identity mapper in a chain of M-R jobs > ------------------------------------------------------- > > Key: PIG-480 > URL: https://issues.apache.org/jira/browse/PIG-480 > Project: Pig > Issue Type: Improvement > Affects Versions: 0.2.0 > Reporter: Olga Natkovich > Assignee: Ying He > Attachments: PIG_480.patch, PIG_480.patch > > > For jobs with two or more MR jobs, use identity mapper wherever possible in > second and subsequent MR jobs. Identity mapper is about 50% than pig empty > map job because it doesn't parse the data. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.