Github user navis commented on the pull request:
https://github.com/apache/tajo/pull/426#issuecomment-85285700
2M rows sometimes made GCs, causing inversion of elapsed time.--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at [email protected] or file a JIRA ticket with INFRA. ---
