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Re: Documenting Guidance on compression and codecs - HBase - [mail # dev]
...lz4 is at least 2x faster  than Snappy with comparable compression.  BLOCK_ENCODING make sense only if Keys are ~ Values (time-series type of data) as since it compresses only keys...
   Author: Vladimir Rodionov, 2013-09-11, 20:33
RE: HBase : get(...) vs scan and in-memory table - HBase - [mail # user]
...There is no guarantee that your tables are in memory and you can not verify this directly. HBase will do its best to keep them in memory but its not 100%. Cache is divided in 3 zones (defaul...
   Author: Vladimir Rodionov, 2013-09-11, 18:07
RE: Tables gets Major Compacted even if they haven't changed - HBase - [mail # user]
...Sure, you can overwrite standard compaction in RegionCoprocessor  Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [EMAIL PROTECTED] &nb...
   Author: Vladimir Rodionov, 2013-09-10, 05:10
RE: Hbase ExportSnapshot with AWS - HBase - [mail # user]
...Great, thanks.  One possible enhancement: support for  arbitrary file system (not only s3).  Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrie...
   Author: Vladimir Rodionov, 2013-09-09, 23:42
RE: Cannot start HBase master: loaded coprocessors are: [] - HBase - [mail # user]
...It has nothing to do with coprocessors. Your errors is Unresolved address. Check "hbase.master.info.bindAddress" in hbase-site.xml  Best regards, Vladimir Rodionov Principal Platform En...
   Author: Vladimir Rodionov, 2013-09-06, 17:58
RE: Coprocessor concurrency - HBase - [mail # user]
...RS handler count 800 is an overkill.   Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [EMAIL PROTECTED]  ________________________...
   Author: Vladimir Rodionov, 2013-08-30, 19:44
RE: experiencing high latency for few reads in HBase - HBase - [mail # user]
...Usually, either cluster restart or major compaction helps improving locality index. There is an issue in region assignment after table disable/enable in 0.94.x (x  wrote:  ...
   Author: Vladimir Rodionov, 2013-08-29, 18:11
RE: passing a parameter to an observer coprocessor - HBase - [mail # user]
...This is not so flexible and dynamic. Changing table level attributes will require disabling/enabling table (20-30 seconds for large tables) Is OK with your use case?  Best regards, Vlad...
   Author: Vladimir Rodionov, 2013-08-22, 21:17
RE: one column family but lots of tables - HBase - [mail # user]
...Yes, number of tables must be reasonable as well. Region Servers operates on 'regions' . Each Table can have multiple CFs, each CF can have multiple regions. The more regions you have per Re...
   Author: Vladimir Rodionov, 2013-08-22, 21:16
RE: I am curious how to find hbase replication lag - HBase - [mail # user]
...Just simple canary probe approach  Update cluster1:t1:canary_row with a current time every (say) 1 sec Read time from cluster2:t1:canary_row every second  Compute the difference &n...
   Author: Vladimir Rodionov, 2013-08-19, 21:00
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