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[expand - 4 more] - Re: AssignmentManager looping? - HBase - [mail # user]
...Jimmy,    Sounds like our dreaded reference file issue again. I spoke with JM and he is going to try to reproduce this  My gut tells me our point of no return may be in the wr...
   Author: Kevin O'dell, 2013-08-01, 17:52
Re: Multiple region servers per physical node - HBase - [mail # user]
...Elliot,    Can you elaborate on the blocking being a major factor?  Are you referring to the default value of 7 slowing down writes?  I don't think removing that feature ...
   Author: Kevin O'dell, 2013-07-30, 14:14
Re: G1 before/after GC time graph - HBase - [mail # user]
...Anyway you can test this with a 32GB heap? :)   On Wed, Jul 10, 2013 at 5:23 PM, Otis Gospodnetic  wrote:     Kevin O'Dell Systems Engineer, Cloudera...
   Author: Kevin O'dell, 2013-07-10, 21:27
Re: GC recommendations for large Region Server heaps - HBase - [mail # user]
...Hey Suraj,    I would recommend turning on MSlab and using the following settings:  -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=70 -XX:+CMSPara...
   Author: Kevin O'dell, 2013-07-08, 18:25
[expand - 1 more] - Re: how many severs in a hbase cluster - HBase - [mail # user]
...Mohammad,    The NN is low write, and has pretty static memory usage.  You will see the NN memory usage go up as you add blocks/files.  Since, HBase has memory limitation...
   Author: Kevin O'dell, 2013-06-23, 13:39
[expand - 1 more] - Re: Efficiently wiping out random data? - HBase - [mail # dev]
...Yeah, the immutable nature of HDFS is biting us here.   On Wed, Jun 19, 2013 at 8:46 AM, Jean-Daniel Cryans wrote:     Kevin O'Dell Systems Engineer, Cloudera...
   Author: Kevin O'dell, 2013-06-19, 12:48
Re: Running HBase with different versions - HBase - [mail # user]
...I agree with JM on this one, minor version should be fine unless there is a major known issue.  On the other hand, if it is within control you should always try to match client with ser...
   Author: Kevin O'dell, 2013-06-17, 02:35
Re: Hbase write stream blocking and any solutions? - HBase - [mail # user]
...Hi Yun,  Sorry for the novel, also I am not fully awake so hopefully all of this makes sense!    Something like that(peak/off peak settings) does not exist, but a properly siz...
   Author: Kevin O'dell, 2013-06-10, 13:37
Re: Activating LZO compression on HBase - HBase - [mail # user]
...I don't want to start a compression war here, but is there a reason you are trying to use LZO over Snappy?   On Sat, Jun 8, 2013 at 9:54 AM, Ashwanth Kumar <[EMAIL PROTECTED]   ...
   Author: Kevin O'dell, 2013-06-08, 14:10
Re: Region servers going down under heavy write load - HBase - [mail # user]
...Ameya,    What does your zoo.cfg say for your timeout value?   On Wed, Jun 5, 2013 at 4:47 PM, Ameya Kantikar  wrote:     Kevin O'Dell Systems Engineer, Clouder...
   Author: Kevin O'dell, 2013-06-05, 20:49
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