Moving to [email protected] then (hbase in BCC). Hi Dan,
The best way to know how to achieve this with Cloudera Manager is to ask on the scm-users list. I'm net yet enough used to CM to reply to your question so I will let someone else confirm. JMS 2013/4/25 Dan Crosta <[email protected]>: > Sorry, I should have mentioned before -- we are using CDH 4.2, which does not > package the graceful_stop script. Do you happen to know if there's a way to > do this through the CDH manager? Perhaps the "decommission" action does > something similar? My impression is that "decommission" is more heavy-handed, > but if that's the most convenient route, that'll work for us. > > Thanks, > - Dan > > On Apr 25, 2013, at 11:30 AM, Jean-Marc Spaggiari wrote: > >> Hi Dan, >> >> You might want to take a look at bin/graceful_stop.sh . It will move >> all the regions hosted by your RS to other RS before stopping it >> gracefuly. After the maintenance, simply start the RS/DN back and it >> will be added back to the cluster. Loadbalancer will then assign some >> regions back to him. You will loose some data locality for the regions >> wich are going to be moved. >> >> JM >> >> 2013/4/25 Dan Crosta <[email protected]>: >>> We have to perform maintenance on one of our HDFS DataNode/HBase >>> Regionserver machines for a few hours. What are the right steps to take >>> before doing the maintenance in order to ensure limited impact to the >>> cluster and (thrift) clients of the cluster, both for HDFS and HBase? >>> >>> After the maintenance, are there any special steps required to add the node >>> back to the cluster, or can we simply restart the services and HDFS/HBase >>> take care of the rest? >>> >>> Thanks, >>> - Dan >
