Thanks!
From: Arun C Murthy [mailto:a...@hortonworks.com]
Sent: Monday, October 07, 2013 6:07 PM
To: user@hadoop.apache.org
Subject: Re: MapReduce task-worker assignment
Short version: MR provides all the info it can to (about all it's tasks
locations) and the YARN scheduler deals
Short version: MR provides all the info it can to (about all it's tasks
locations) and the YARN scheduler deals with providing good locality with even
assignment.
I don't have a handy link to a doc, but here is an ancient version:
Is there a description of how MapReduce under Hadoop 2.0 assigns mapper tasks
to preferred nodes? I think that someone on the list mentioned previously that
it attempted to assign one HDFS block per mapper task, but given that there
can be multiple block instances per data split, how does
