I added some comments to the review board. I love the idea, but the patch needs to be cleaned up to get committed. Also, please provide a patch that is based to trunk. Or it's not easy to test.
Thanks! Cheolsoo On Thu, Jul 24, 2014 at 5:06 AM, Nhat Hoang <[email protected]> wrote: > Hello everyone, > > I am currently a master student at EURECOM (www.eurecom.fr). I am working > on a project related to Apache Pig in the context of a EU-funded project > Bigfoot (www.bigfootproject.eu). > > Based on our previous work: “Duy-Hung Phan, Matteo Dell’Amico, Pietro > Michiardi: On the design space of MapReduce ROLLUP aggregates” ( > http://www.eurecom.fr/en/publication/4212/download/rs-publi-4212_2.pdf), I > am working on a new family of algorithms to address some limitations of the > current ROLLUP operator in Apache Pig: the IRG (in-reducer grouping), the > hybrid IRG, and chained-IRG. I have an implementation that indicates > superior performance to the existing ROLLUP implementation. > > You can find out more information on this work here: > https://issues.apache.org/jira/browse/PIG-4066. I've also created a review > request on the review board: https://reviews.apache.org/r/23804/ > It would be very helpful for me if someone can review and have some > feedback on this patch. > > > Looking forward for the feedback. > > Regards, > Quang-Nhat HOANG-XUAN >
