Cycling old bits: http://search-hadoop.com/m/WsPol11E4ss1/Zookeeper+ec2&subj=Best+practices+for+using+zookeeper+in+an+Amazon+EC2+environment
On Jun 14, 2014, at 2:10 PM, S Ahmed <[email protected]> wrote: > Are there any 'best practices' when running zookeeper on ec2? i.e. the > latency could be poor and hostname/ip addresses can also change when bring > a node up/down. > > > On Sat, Jun 14, 2014 at 10:13 AM, Ted Yu <[email protected]> wrote: > >> bq. what is the process do recover? >> >> You need to bring zookeeper nodes back as soon as possible. >> >> bq. will all clients reconnect or do you have to restart all servers? >> >> This depends on the release of hbase you're using and the duration which >> zookeeper ensemble is down. >> If the duration is longer than the value for zookeeper.session.timeout, >> region servers would go down. >> >> See also http://hbase.apache.org/book.html#zookeeper >> >> >> On Sat, Jun 14, 2014 at 6:31 AM, S Ahmed <[email protected]> wrote: >> >>> Hello, >>> >>> If zookeeper goes down (all of them if you have 3/5 nodes), what is the >>> process do recover? >>> >>> If you simply bring back the zookeeper nodes, will all clients reconnect >> or >>> do you have to restart all servers? >>> >>> Thanks. >>
