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Re: Hbase scalability performance - HBase - [mail # user]
...I thought it was Doug Miel who said that HBase doesn't start to shine until you had at least 5 nodes.  (Apologies if I misspelled Doug's name.)   I happen to concur and if you want...
   Author: Michael Segel, 2012-12-22, 16:23
[expand - 9 more] - Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
...Nick,  Yes there is an implied definition of  the term 'salting' which to those with a CS or Software Engineering background will take to heart. However it goes beyond this definit...
   Author: Michael Segel, 2012-12-20, 20:15
[expand - 1 more] - Re: HBASE - select distinct query against the rowkey - HBase - [mail # user]
...There is no concept of transaction in the NoSQL world.  At least not in HBase.  All writes are atomic. Note that you *could* hold a lock, however, not really a good idea for a clie...
   Author: Michael Segel, 2012-12-20, 16:48
Re: Many scanner opening - HBase - [mail # user]
...I'd suggest looking in to a schema design change.  On Dec 18, 2012, at 2:01 AM, Eugeny Morozov  wrote:  ...
   Author: Michael Segel, 2012-12-20, 13:14
[expand - 1 more] - Re: recommended nodes - HBase - [mail # user]
...Yeah,  I couldn't argue against LVMs when talking with the system admins.  In terms of speed its noise because the CPUs are pretty efficient and unless you have more than 1 drive p...
   Author: Michael Segel, 2012-12-20, 01:14
[expand - 1 more] - Re: Customizing hbase shell's table formatting - HBase - [mail # user]
...Well the shell is written in JRuby which is pretty much Ruby.   That's the best way to enhance the shell.   On Dec 19, 2012, at 2:56 PM, Adam Phelps  wrote:  ...
   Author: Michael Segel, 2012-12-19, 21:04
Re: How to design a data warehouse in HBase? - HBase - [mail # user]
...I think you need to level set your expectation. Hive is good if you're working with a large portion of your underlying data set.   HBase is better if you're looking at a relatively smal...
   Author: Michael Segel, 2012-12-13, 20:20
[expand - 1 more] - Re: Heterogeneous cluster - HBase - [mail # user]
...Ok...   From a production/commercial grade answer...   With respect to HBase, you will have 1 live copy and 2 replications. (Assuming you didn't change this.) So when you run again...
   Author: Michael Segel, 2012-12-09, 08:27
Re: setup of a standalone HBase on local filesystem - HBase - [mail # user]
...I wouldn't do that unless you're running in a VM. Also don't lose the local host reference. That's the important one.   On Nov 26, 2012, at 4:46 AM, Mohammad Tariq  wrote:  ...
   Author: Michael Segel, 2012-11-26, 16:36
[expand - 1 more] - Re: Expert suggestion needed to create table in Hbase - Banking - HBase - [mail # user]
...If the row Key is just the customer ID, then a simple MD5 hash or SHA-1 hash would suffice.  That would clear up any risk of hot spotting, once you do your initial load of data.   ...
   Author: Michael Segel, 2012-11-26, 12:30
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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