[ https://issues.apache.org/jira/browse/YARN-1881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Karthik Kambatla resolved YARN-1881. ------------------------------------ Resolution: Invalid Marking it as "Invalid" for now. We can always re-open once we find a more specific root cause. > configuration for performance tuning > ------------------------------------ > > Key: YARN-1881 > URL: https://issues.apache.org/jira/browse/YARN-1881 > Project: Hadoop YARN > Issue Type: Test > Components: nodemanager > Affects Versions: 2.2.0 > Reporter: rrim > > Hi, > my MR jobs run very slow on hadoop, some block in reduce tasks > -input data is small, number of splits is 2 > -memory is available ('free -m' shows a usage under 4GB per node), each node > has 32GB > -yarnchild(s) are consuming 100% CPU (tests with "top") > and I don't find ways to improve performance > best -- This message was sent by Atlassian JIRA (v6.2#6252)