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From Peter Wolf <opus...@gmail.com>
Subject Re: Region Server Crash
Date Tue, 13 Mar 2012 16:26:14 GMT
Sorry, here's what we are using:

  * All 3 nodes are m1.large ebs instances.
  * 1 Master node running the following services:
      o hadoop-0.20-namenode
      o hadoop-0.20-secondarynamenode
      o hadoop-0.20-jobtracker
      o hbase-master is running
      o hadoop-zookeeper-server
      o hadoop-0.20-datanode
      o hadoop-0.20-tasktracker
      o hbase-regionserver
  * 2 Slave nodes running the following services:
      o hadoop-0.20-datanode
      o hadoop-0.20-tasktracker
      o hbase-regionserver
  * Running both hbase-master and hbase-regionserver on the Master node.
  * 2 1TB storage is attached to the Master node (1 for name dir, 1 for
    data dir).
  * 1 TB storage is attached to each Slave node (for data dir).

java version "1.6.0_30"
Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
Java HotSpot(TM) 64-Bit Server VM (build 20.5-b03, mixed mode)

I believe the heap is set to the default size.  I don't see an -Xmx set 

I also have Ganglia running.  What is the best metric to describe loading?


On 3/13/12 12:00 PM, Stack wrote:
> On Tue, Mar 13, 2012 at 8:34 AM, Peter Wolf<opus111@gmail.com>  wrote:
>> Hello all,
>> My Region Server just crashed under load.  Apparently, it ran out of memory.
>>   Disappointing...
>> Does anyone have wisdom on setting Region Server memory?  Any reason not to
>> max it out?
> Any chance of a bit of context?  Version of hbase and jvm.  Hardware.
> What load it was carrying at the time.  What the loading was like?
> Configuration?
> Thanks,
> St.Ack

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