Regards, Ishan.
On 12/03/2012 04:39 PM, Ishan Chhabra wrote:
Hi,
Has anybody tried to run multiple RegionServers on a single physical
node? Are there deep technical issues or minor impediments that would
hinder this?
Can you provide more information about your setup?
- Network
- Disk schema
- RAM
We are trying to do this because we are facing a lot of GC pauses on the
large heap sizes (~70G) that we are using, which leads to a lot of timeouts
in our latency critical application. More processes with smaller heaps
would help in mitigating this issue.
Have you read this, Ishan?
http://www.cloudera.com/blog/2011/04/hbase-dos-and-donts/
This great post described the Long GC pauses problem.
An another great post in the Sematex's blog, describe how Memstore
works, which is a
critical resource for HBase operations:
http://blog.sematext.com/2012/07/16/hbase-memstore-what-you-should-know/
What is the value of:
- dfs.balance.bandwidthPerSec
- dfs.blocksize
- hbase.hregion.memstore.flush.size
- dfs.datanode.max.xcievers
Any experience or thoughts on this would help.
Thanks!
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