NEVER KILL -9 A REGION SERVER!!! - Andy
________________________________ From: Ninad Raut <[email protected]> To: [email protected] Cc: Ranjit Nair <[email protected]> Sent: Thursday, May 14, 2009 3:03:06 AM Subject: Re: Administration tool for HBase Ryan, Using bin/hbase-daemon.sh start regionserver and bin/hbase-daemon.sh stop regionserver can we add/remove slave nodes when the cluster is live? How to handle a region not serving exception? Because in this scenario the daemon.sh script seems to go on forever? We usually kill the HRegion process using kill -9, which causes loss of data if it is not flushed. Regards, Ninad On Thu, May 14, 2009 at 12:26 PM, Ryan Rawson <[email protected]> wrote: > There are tools: > > bin/start-hbase.sh > bin/stop-hbase.sh > > starts/stops cluster. > > per node: > bin/hbase-daemon.sh start regionserver > bin/hbase-daemon.sh stop regionserver > > you might need HBASE-1362 however. > > On Wed, May 13, 2009 at 11:46 PM, Ninad Raut <[email protected] > >wrote: > > > Hi, > > I have been asekd to automate the following processes in HBase: > > > > - Script to add/remove regionservers and datanodes from a cluster when > > cluster is live > > > > > > - Script to handle master node failure > > - Script for graceful shutdown/startup of hbase > > > > Is there any adminsitration tool present for hbase. How can we use Hadoop > > On > > Demand and/or zookeeper to make the cluster failure resistant. > > Regards, > > Ninad > > >
