Home | About | Sematext search-lucene.com search-hadoop.com
clear query|facets|time Search criteria: .   Results from 111 to 120 from 134 (0.135s).
Loading phrases to help you
refine your search...
RE: LIRS cache as an alternative to LRU cache - HBase - [mail # dev]
...afaik, existing LruBlockCache is not exactly LRU cache It utilizes more advanced algorithm to avoid cache trashing during scan ops  by dividing cache into three sub-caches (for newly ad...
   Author: Vladimir Rodionov, 2012-02-21, 17:09
RE: Scan performance on a big table as combination of multiple logic tables - HBase - [mail # dev]
...10 tables are fine. 1000 are not, especially when one does table pre-splitt ing to increase write perf.  Too many regions kill HBase.  Best regards, Vladimir Rodionov Principal Pla...
   Author: Vladimir Rodionov, 2012-02-16, 00:11
RE: Stress testing releases candidates - HBase - [mail # dev]
...+1.  Large number of regions (> 1000) per RS + heavy load - this is what we have  in our environment (staging and productions)  Its not 0.92, of course. Its 90.4 (we just u...
   Author: Vladimir Rodionov, 2012-01-06, 18:30
RE: OfflineMetaRepair? - HBase - [mail # dev]
...Unfortunately, I had to delete all data (to restore data consistency :) ) ,  therefore I can say only that, from my quick investigation, all these tables were pretty old (weeks, even &n...
   Author: Vladimir Rodionov, 2012-01-06, 05:29
RE: -ROOT- is offline - HBase - [mail # dev]
...Thanks, It was resolved after second cluster re-start. In this case - not with kill  -9 but with manual shutdown and restart of every HBase process (including Master and ZK). stop -hbas...
   Author: Vladimir Rodionov, 2012-01-05, 04:42
0.90.4 WrongRegionException - HBase - [mail # dev]
...This is stack trace of exception we got during routine flow execution. Flow  failed.   [2011-12-30 12:32:16] (MetaScanner.java:166) - Scanning .META. starting at  row=MetaTabl...
   Author: Vladimir Rodionov, 2011-12-30, 19:50
RE: Extend ResultScanner API (and InternalScanner) - HBase - [mail # dev]
...Yes, my aim is to reuse scanner for multiple scans. In some cases, "multipl e" can be in order of tens of thousands. The cost of creation of 10,000 scanne rs I suppose is quite high. This is...
   Author: Vladimir Rodionov, 2011-12-23, 08:01
Raw RegionScanner? - HBase - [mail # dev]
...Question:  I have a M/R job which needs to scan HBase table in a most efficient way (a s fast as possible)  1. Data locality matters. Each map task must connect to local RS and fet...
   Author: Vladimir Rodionov, 2011-12-21, 20:19
RE: Early comparisons between 0.90 and 0.92 - HBase - [mail # dev]
...200K random reads is way -way above of what we see in production. ?  1.1M row scan - as well. 10-20K per sec max when you run 'count' from HBase  shell  Is there any magic rec...
   Author: Vladimir Rodionov, 2011-12-15, 20:11
RE: Suspected memory leak - HBase - [mail # dev]
...You can create several heap dumps of JVM process in question and compare heap allocations To create heap dump:  jmap pid  To analize: 1. jhat 2. visualvm 3. any commercial profiler...
   Author: Vladimir Rodionov, 2011-12-01, 06:22
HBase (134)
mail # dev (71)
mail # user (60)
issue (3)
last 7 days (1)
last 30 days (2)
last 90 days (5)
last 6 months (17)
last 9 months (134)
Ted Yu (1220)
Stack (950)
Jean-Daniel Cryans (733)
Andrew Purtell (678)
stack (650)
Jean-Marc Spaggiari (307)
Jimmy Xiang (285)
Jonathan Hsieh (285)
Enis Soztutar (243)
Elliott Clark (242)
lars hofhansl (235)
Lars Hofhansl (228)
Sergey Shelukhin (195)
Nicolas Liochon (191)
Doug Meil (189)
Nick Dimiduk (186)
Todd Lipcon (181)
Lars George (173)
Matteo Bertozzi (157)
ramkrishna.s.vasudevan (154)
Ryan Rawson (142)
Jonathan Gray (133)
Anoop Sam John (132)
Jesse Yates (104)
Himanshu Vashishtha (88)
Vladimir Rodionov