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hbase vs mysql read benchmark - HBase - [mail # user]
...Hi.    We are going to write to hbase 50-80 million records on daily basis. Actually write performance is not critical.   We are going read relatively small amount of data 500...
   Author: Oleg Ruchovets, 2012-03-02, 19:37
IN_MEMORY=true settings question - HBase - [mail # user]
...Hi ,     Default value of IN_MEMORY is false. I am going to set IN_MEMORY to true. Should it improve read operation and what is the trade off setting IN_MEMORY to true ( We  u...
   Author: Oleg Ruchovets, 2012-03-02, 19:10
Hbase Table has many column families - HBase - [mail # user]
...Hi , according   hbase book  ( http://hbase.apache.org/book/number.of.cfs.html ) it is recommended as less column families as possible.  I our case we have a schema which has ...
   Author: Oleg Ruchovets, 2012-03-02, 18:49
major compaction time constantly growing - HBase - [mail # user]
...Hi ,   Our environment hbase 90.2 (10 machine)     We have 10 machine grid:     master has 48G ram     slaves machine has 16G ram.     Region Ser...
   Author: Oleg Ruchovets, 2011-09-21, 18:31
[expand - 3 more] - Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe) - HBase - [mail # user]
...Thank you very much for your post , It very similar what is happening in our environment.      Before we are going to increase HeapSize we want to make some tuning for hbase m...
   Author: Oleg Ruchovets, 2011-08-25, 08:55
Re: M/R vs hbase problem in production - HBase - [mail # user]
...On Tue, Aug 16, 2011 at 5:50 AM, Michael Segel wrote:     We have 10 machine grid:   master has 48G ram   slaves machine has 16G ram.   Region Server process has 4G ...
   Author: Oleg Ruchovets, 2011-08-16, 16:09
[expand - 1 more] - Re: insertion data to hbase crashed - HBase - [mail # user]
...On Tue, Aug 9, 2011 at 1:44 AM, Stack  wrote:   Yes , I saw this too , but I think this is not a root of the problem , it is a result of server being busy compacting the files and ...
   Author: Oleg Ruchovets, 2011-08-09, 23:08
[expand - 1 more] - Re: hbase row TTL - HBase - [mail # user]
...Well ,    We put data to hbase on daily bases. We didn't works with versions All I need is after some predefined time (TTL) records from specific hbase table will be deleted/expire...
   Author: Oleg Ruchovets, 2011-05-26, 07:38
[expand - 1 more] - Re: major compaction best practice - HBase - [mail # user]
...Hi ,    I turn off major compaction       hbase.hregion.majorcompaction     *0*     The time (in miliseconds) between 'major' compactions of all ...
   Author: Oleg Ruchovets, 2011-05-19, 13:47
upgrade from hbase 0.90.1 to 0.90.2 - HBase - [mail # user]
...Hi    We running on hbase 0.90.1 and want to upgrade to 0.90.2. What is the process to do it , I mean is it enough to change the jar or it requires configuration files changes. Ple...
   Author: Oleg Ruchovets, 2011-04-12, 07:30
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB