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Re: Standard vs Asynchbase client reconnect after HBase restart - HBase - [mail # user]
...Silly question... What makes you think that what you are seeing isn't already as fast as possible? You are looking at an async client versus a synchronous client, right? Also... what do you ...
   Author: Michael Segel, 2014-02-13, 00:12
[expand - 5 more] - Re: Design review: Secondary index support through coprocess - HBase - [mail # dev]
...Wow.That's the first time in 25 years that I've heard someone actually reference the dining philosophers problem. ;-)On Jan 22, 2014, at 1:35 PM, Wei Tan  wrote:> Thanks, Vladimir. S...
   Author: Michael Segel, 2014-01-23, 10:46
Re: Finding the latest updated rows - HBase - [mail # user]
...Using the timestamp to find the last updated row is going to cause problems...   1) It will have to be the first portion of your composite row-key, otherwise you still end up performing...
   Author: Michael Segel, 2014-01-21, 12:14
[expand - 1 more] - Re: HBase 0.94.15: writes stalls periodically even under moderate steady load (AWS EC2) - HBase - [mail # dev]
...I need to apologize and clarify this statement…   First, running benchmarks on AWS is ok, if you’re attempting to get a rough idea of how HBase will perform on a certain class of machin...
   Author: Michael Segel, 2014-01-17, 15:03
Re: How to remove duplicate data in HBase? - HBase - [mail # user]
...First, you should define what you mean when you say duplicate data.  Depending on your definition… it may already be handled.   On Jan 17, 2014, at 7:39 AM, Ted Yu  wrote: &nb...
   Author: Michael Segel, 2014-01-17, 14:54
Re: Fine tunning - HBase - [mail # user]
...In your mapreduce, in the mapper.setup() read the lookup tables in to memory and then access them as needed in your Mapper.map() method. Same for reducer...   See mapper  joins in ...
   Author: Michael Segel, 2014-01-17, 12:19
[expand - 1 more] - Re: Purpose of versions in HBase... - HBase - [mail # dev]
...I believe there's a bit more to it...   Which is why I am asking.  As to #3... What happens to a column when you put a tombstone marker on it?   On Dec 9, 2013, at 11:56 AM, S...
   Author: Michael Segel, 2013-12-09, 23:17
[expand - 2 more] - Re: Practical Upper Limit on Number of Version Stored? - HBase - [mail # user]
...Look,   Just because you can do something, doesn't mean its a good idea.   From a design perspective its not a good idea.   Ask yourself why does versioning exist?  What ...
   Author: Michael Segel, 2013-12-06, 12:23
Re: Linear Scalability in HBase - HBase - [mail # user]
...How do you define linear scalability?  Is it as the cluster grows the time it takes to fetch data is roughly consistent?   In your test… you’re changing both the number of users an...
   Author: Michael Segel, 2013-10-25, 15:24
[expand - 2 more] - Re: coprocessor status query - HBase - [mail # user]
...Well...   I am biting my tongue. ;-P  I could have gone on to say that unless you have a very special use case that can't be implemented another way, and that you are going to have...
   Author: Michael Segel, 2013-10-23, 12:21
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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