Todd Lipcon created YARN-2491: --------------------------------- Summary: Speculative attempts should not run on the same node as their original attempt Key: YARN-2491 URL: https://issues.apache.org/jira/browse/YARN-2491 Project: Hadoop YARN Issue Type: Bug Components: scheduler Affects Versions: 3.0.0 Reporter: Todd Lipcon
I'm seeing a behavior on trunk with fair scheduler enabled where a speculative reduce attempt is getting run on the same node as its original attempt. This doesn't make sense -- the main reason for speculative execution is to deal with a slow node, so scheduling a second attempt on the same node would just make the problem worse if anything. -- This message was sent by Atlassian JIRA (v6.3.4#6332)