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Re: hadoop block locations - HBase - [mail # user]
...I responded to your post on the hadoop user list, but you will need to domanual major compactions to recover locality.  It may recover automaticallyover time, but only if there is activ...
   Author: Bryan Beaudreault, 2014-03-28, 01:52
Re: Hbase snapshot timeout - HBase - [mail # user]
...hbase.snapshot.master.timeout.millis allows you to control the timeout Ibelieve.On Thu, Mar 27, 2014 at 9:38 AM, Alex Simenduev  wrote: ...
   Author: Bryan Beaudreault, 2014-03-27, 16:20
Re: region locality - HBase - [mail # user]
...The balancer in 0.92.x is very naive.  It just ensures that allregionservers will have approximately the same number of regions. Therefore, the answer is: "yes it is possible, but ...
   Author: Bryan Beaudreault, 2014-03-26, 02:07
[expand - 2 more] - Re: Hbase tuning for heavy write cluster - HBase - [mail # user]
...We have 5 production HBase clusters, one of which hosts the TSDB data.  2of these clusters (including the TSDB one) have been running 100% java7 forup to a couple weeks.  We notice...
   Author: Bryan Beaudreault, 2014-01-25, 03:11
Re: HBase 0.94.15: writes stalls periodically even under moderate steady load (AWS EC2) - HBase - [mail # dev]
...This might be better on the user list? Anyway..  How many IPC handlers are you giving?  m1.xlarge is very low cpu.  Not only does it have only 4 cores (more cores allow more c...
   Author: Bryan Beaudreault, 2014-01-16, 18:33
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
[expand - 2 more] - 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
[expand - 1 more] - 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
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