Re: How to configure detection of failed NodeManager's sooner?

You're looking for the property "yarn.nm.liveness-monitor.expiry-interval-ms", whose default is 60ms (10m). This is to be set on the ResourceManager(s)' yarn-site.xml. (X-Ref: https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-common/yarn-default.xml#yarn.nm.liveness-monitor.expiry

RE: Trash data after upgrade from 2.7.1 to 2.7.2

Hi Chef, Can you confirm the below points? 1) Did you upgrade all datanodes to 2.7.2? 2) Did you finalized the upgrade using the following command? Run "hdfs dfsadmin -rollingUpgrade finalize