omalley opened a new pull request #4091: URL: https://github.com/apache/hadoop/pull/4091
### Description of PR The distance metric used for machines in 2.10 that aren't in the NetworkTopology, because they aren't running DataNodes, is wrong. It means that off-rack and on-rack, but off-node, are both given a weight of 2. In normal Hadoop clusters, this isn't a big problem because they don't have clients that are on-rack but without DataNodes. For clusters that are striped (federated HDFS going across racks) or separate compute and storage that share racks are both really bad with this bug. ### How was this patch tested? Unit test added. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
