Great - thanks Patrick!
On Thu, Oct 28, 2010 at 6:13 PM, Patrick Hunt <ph...@apache.org> wrote: > Tim, one other thing you might want to be aware of: > http://hadoop.apache.org/zookeeper/docs/current/zookeeperAdmin.html#sc_supervision > > Patrick > > On Thu, Oct 28, 2010 at 9:11 AM, Patrick Hunt <ph...@apache.org> wrote: >> On Thu, Oct 28, 2010 at 2:52 AM, Tim Robertson >> <timrobertson...@gmail.com> wrote: >>> We are setting up a small Hadoop 13 node cluster running 1 HDFS >>> master, 9 region severs for HBase and 3 map reduce nodes, and are just >>> installing zookeeper to perform the HBase coordination and to manage a >>> few simple process locks for other tasks we run. >>> >>> Could someone please advise what kind on heap we should give to our >>> single ZK node and also (ahem) how does one actually set this? It's >>> not immediately obvious in the docs or config. >> >> The amount of heap necessary will be dependent on the application(s) >> using ZK, also configuration of the heap is dependent on what >> packaging you are using to start ZK. >> >> Are you using zkServer.sh from our distribution? If so then you >> probably want to set JVMFLAGS env variable. We pass this through to >> the jvm, see -Xmx in the man page >> (http://www.manpagez.com/man/1/java/) >> >> Given this is Hbase (which I'm reasonably familiar with) the default >> heap should be fine. However you might want to check with the Hbase >> team on that. >> >> I'd also encourage you to enter a JIRA on the (lack of) doc issue you >> highlighted: https://issues.apache.org/jira/browse/ZOOKEEPER >> >> Regards, >> >> Patrick >> >
