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Allen Wittenauer resolved MAPREDUCE-442. ---------------------------------------- Resolution: Duplicate I'm going to dupe this to HADOOP-7001, since it's closer to reality. Other jiras tend to point to it as well. > Ability to re-configure hadoop daemons online > --------------------------------------------- > > Key: MAPREDUCE-442 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-442 > Project: Hadoop Map/Reduce > Issue Type: New Feature > Reporter: Amar Kamat > > Example : > Like we have _bin hadoop mradmin -refreshNodes_ we should also have _bin > hadoop mradmin -reconfigure_ which re-configures mr while the cluster is > online. Few parameters like job-expiry-interval etc can be changed in this > way without having to restart the whole cluster. > Master, once reconfigured, can ask the slaves to reconfigure (reload its > config) from a well defined location on hdfs or via heartbeat. > We can have some whitelisted configs that have _reloadable_ property. -- This message was sent by Atlassian JIRA (v6.2#6252)