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Re: CopyTable utility fails on larger tables - HBase - [mail # user]
...Hi Doug,  This did the trick. I pre-split the empty destination table and CopyTable worked as expected afterwards.  Thank you again,  /David   On Wed, Dec 5, 2012 at 6:44...
   Author: David Koch, 2012-12-06, 13:32
Re: Using doubles and longs as ordering row values - HBase - [mail # user]
...Hello Lars,  Thank you. Where can I find the lily library? I can't find it on github or Google.  /David   On Fri, Nov 30, 2012 at 3:54 AM, lars hofhansl  wrote:  ...
   Author: David Koch, 2012-12-01, 15:01
Re: PrefixFilter is not working with long in HBase - HBase - [mail # user]
...Hi,  If your row keys really are really longs, i.e stored as: Long.getBytes() and NOT Long.toString().getBytes() than you could just use:  Filter rowFilter = new RowFilter(CompareO...
   Author: David Koch, 2012-11-23, 13:09
Re: Custom versioning best practices - HBase - [mail # user]
...Hello Michael,  Thank you for your response.  By the way, is it possible to set setMaxVersions per column family on a scan?  /David   On Thu, Nov 22, 2012 at 5:11 PM, Mic...
   Author: David Koch, 2012-11-22, 20:47
Re: Scan performance on compressed column families - HBase - [mail # user]
...Hello Oliver,  Thank you for the clarification. As Kevin also pointed out, I guess we will just have to test compression in our environment.  Regards,  /David   On Fri, N...
   Author: David Koch, 2012-11-11, 18:08
Re: HBase scan performance decreases over time. - HBase - [mail # user]
...Hello Ted,  We never initiate major compaction manually. I have not looked at I/O balance between nodes in detail. We have noticed that after running for a couple of weeks HBase seems t...
   Author: David Koch, 2012-11-03, 19:50
Efficient way to sample from large HBase table. - HBase - [mail # user]
...Hello,  I need to sample 1million rows from a large HBase table. What is an efficient way of doing this?  I thought about a RandomRowFilter on a scan of the source table to get app...
   Author: David Koch, 2012-10-12, 15:04
Re: Fixing badly distributed table manually. - HBase - [mail # user]
...Hello,  I also found this fairly recent script here which can be used with Gnuplot to get a visual representation of data distribution across nodes:  http://bobcopeland.com/blog/20...
   Author: David Koch, 2012-09-05, 08:40
Using timestamps as "transaction ids" for idempotent counters. - HBase - [mail # user]
...Hello,  I use a table for counting stuff and want to do updates by pushing increments rather than get -> add in application -> put.  To ensure idempotence (i.e avoid over cou...
   Author: David Koch, 2012-08-24, 14:47
Eliminating rows with many KVs using a custom filter. - HBase - [mail # user]
...Hello,  I implemented and deployed a custom HBase filter. All it does is omit rows which contain more than  KeyValue pairs. The central part is implementing Filter filterKeyValue()...
   Author: David Koch, 2012-08-17, 12:58
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