Have you considered using BucketCache ? Please read 9.6.4.1 under http://hbase.apache.org/book.html#regionserver.arch
Note: remember to verify the config values against the hbase release you're using. Cheers On Thu, Jul 17, 2014 at 2:53 PM, Jane Tao <[email protected]> wrote: > Hi Ted, > > In my case, there is a 6 Node HBase cluster setup (running on Oracle BDA). > Each node has plenty of RAM (64GB) and CPU cores. Several articles seem to > suggest > that it is not a good idea to allocate too much RAM to region server's > heap setting. > > If each region server has 10GB heap and there is only one region server > per node, then > I have 10x6=60GB for the whole HBase. This setting is good for ~100M rows > but starts > to incur lots of GC activities on region servers when loading billions of > rows. > > Basically, I need a configuration that can fully utilize the free RAM on > each node for HBase. > > Thanks, > Jane > On 7/16/2014 4:17 PM, Ted Yu wrote: > >> Jane: >> Can you briefly describe the use case where multiple region servers are >> needed on the same host ? >> >> Cheers >> >> >> >> On Wed, Jul 16, 2014 at 3:14 PM, Dhaval Shah <[email protected] >> > >> wrote: >> >> Its certainly possible (atleast with command line) but probably very >>> messy. You will need to have different ports, different log files, >>> different pid files, possibly even different configs on the same machine. >>> >>> >>> Regards, >>> Dhaval >>> >>> >>> ________________________________ >>> From: Jane Tao <[email protected]> >>> To: [email protected] >>> Sent: Wednesday, 16 July 2014 6:06 PM >>> Subject: multiple region servers at one machine >>> >>> >>> Hi there, >>> >>> Is it possible to run multiple region servers at one machine/node? If >>> this is possible, how to start multiple region servers with command >>> lines or cloudera manager? >>> >>> Thanks, >>> Jane >>> >>> >>> -- >>> >> > -- > >
