Joey, Is yarn just a synonym for MRv2? And if so he would still have to create a custom application master for his job type right?
Matt -----Original Message----- From: Joey Echeverria [mailto:j...@cloudera.com] Sent: Tuesday, October 04, 2011 11:06 AM To: mapreduce-user@hadoop.apache.org Subject: Re: Submitting a Hadoop task from withing a reducer You may want to check out Yarn, coming in Hadoop 0.23: https://issues.apache.org/jira/browse/MAPREDUCE-279 -Joey On Tue, Oct 4, 2011 at 11:45 AM, Yaron Gonen <yaron.go...@gmail.com> wrote: > Hi, > Hadoop tasks are always stacked to form a linear user-managed workflow (a > reduce step cannot start before all previous mappers have stopped etc). This > may be problematic in recursive tasks: for example in a BFS we will not get > any output until the longest branch has been reached. > In order to solve than, an idea came up of submitting a whole Hadoop task > from within a reducer. Have anyone tried it? > Thanks. > -- Joseph Echeverria Cloudera, Inc. 443.305.9434 This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware". Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations.
