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Re: 3-Hour Periodic Network/CPU/Disk/Latency Spikes - HBase - [mail # user]
...Have you taken a look at the logs on the RegionServers during the period?  One possibility is compactions happening organically.  If you were sustaining a certain level of writes m...
   Author: Bryan Beaudreault, 2013-12-13, 20:19
Re: MultiMaster HBase: --backup really needed ? - HBase - [mail # user]
...I've run HBase from version 0.90.2 to our current 0.94.6 (CDH 4.3) and have never specified a --backup option on any of my commands with regard to the master.  You're correct that they ...
   Author: Bryan Beaudreault, 2013-12-09, 17:37
Re: Practical Upper Limit on Number of Version Stored? - HBase - [mail # user]
...I generally agree with Michael and avoid using versions for anything other than versioning, but mostly out of personal preference.  That said, I also agree with JM that 50-200 should be...
   Author: Bryan Beaudreault, 2013-12-06, 02:28
Re: Average RPC Queue Time - HBase - [mail # user]
...I'm not sure why it is so much higher than your rpc timeout.  Enabling DEBUG log level on org.apache.hadoop.ipc.HBaseServer.trace and org.apache.hadoop.ipc.HBaseServer loggers might pro...
   Author: Bryan Beaudreault, 2013-11-20, 18:09
Re: ExportSnapshot very slow. bug? - HBase - [mail # user]
...Ok thanks, I guess I am paying the cost of too many regions, which when multiplied by store files results in many thousand small files.  Is there any reason I couldn't modify this to pa...
   Author: Bryan Beaudreault, 2013-11-08, 19:19
Re: HBase Table Row Count Optimization - A Solicitation For Help - HBase - [mail # user]
...I could be wrong, but based on the info in your most recent emails and the logs therein as well, I believe you may be running this job as a single process.  Do you actually have a full ...
   Author: Bryan Beaudreault, 2013-09-21, 01:46
Re: HBase Region Server crash if column size become to big - HBase - [mail # user]
...@John, I think you're going to want to limit your batch, as opposed to raise it.  How much memory does the RegionServer get?  Are you sure the row is only 70MB?  You could che...
   Author: Bryan Beaudreault, 2013-09-11, 16:15
Re: Default balancer status - HBase - [mail # user]
...This was fixed in 0.95.2.  https://issues.apache.org/jira/browse/HBASE-6260  In the meantime you can set the hbase.balancer.period to a very large number.   On Thu, Aug 29, 20...
   Author: Bryan Beaudreault, 2013-08-29, 19:35
Re: experiencing high latency for few reads in HBase - HBase - [mail # user]
...If you lost a RS or otherwise moved a region around (hbase balancer?) then it would throw off the locality.  You'll want to compact any time a region moves for any reason (unless it mov...
   Author: Bryan Beaudreault, 2013-08-29, 17:55
Re: issue about rowkey design - HBase - [mail # user]
...HBase is all about denormalization and designing for the usecase/query pattern.   If it's possible for your application it will be better to provide three different indexes, as opposed ...
   Author: Bryan Beaudreault, 2013-08-16, 15:06
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