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[expand - 1 more] - RE: SILT - nice keyvalue store paper - HBase - [mail # dev]
...There is nothing crazy with async I/O. Netty (which I presume is underlying  network library in a latest Hadoop) is totally async.  You can run 1000, 10,000 and may be more threads...
   Author: Vladimir Rodionov, 2011-10-24, 20:21
[expand - 1 more] - RE: HBase releases... - HBase - [mail # dev]
...Jonathan, to make your community happier could you (your company)  contribu te all Facebook's internal patches to 0.92?  I apologize to everyone who think that I was rude in my pre...
   Author: Vladimir Rodionov, 2011-10-14, 17:42
RE: ConcurrentSkipListMap performance in the MemStore - HBase - [mail # dev]
...1. Take good open source memory allocator (tcmalloc, jemalloc ...) 2. Wrap its basic (malloc, free, realloc) into JNI code. There are some cav eats in multi-threaded env but experienced &nbs...
   Author: Vladimir Rodionov, 2011-06-15, 20:06
HTable thread safety in 0.20.6 - HBase - [mail # dev]
...Can anybody tell me is is this class thread-safe or not. Can I share the same instance between threads (for parallel puts)?  Best regards, Vladimir Rodionov Principal Platform Engineer ...
   Author: Vladimir Rodionov, 2011-02-18, 22:55
[expand - 2 more] - RE: Scan operator ignores setMaxVersions (0.20.6) - HBase - [mail # dev]
...My bad  I should have been using Result.getMap() to get all versions of a cell.  Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [...
   Author: Vladimir Rodionov, 2011-01-28, 00:13
RE: Heap fragmentation - HBase - [mail # dev]
...BigMemory anyone?  http://www.terracotta.org/bigmemory   Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [EMAIL PROTECTED]  _...
   Author: Vladimir Rodionov, 2011-01-20, 18:34
RE: Hypertable claiming upto >900% random-read throughput vs HBase - HBase - [mail # dev]
...Why do not you use off heap memory for this purpose? If its block cache (al l blocks are of equal sizes) alloc/free algorithm is pretty much simple - you do not have to re-implemen t malloc ...
   Author: Vladimir Rodionov, 2010-12-15, 20:27
RE: subtopic for coprocessor hackathon: CCIndex - HBase - [mail # dev]
...90M records, 118 bytes each ~ 10GB of data (w/o compression) 16 node cluster 300K records per sec = 35MB -> ~2MB per sec per node  May be there is something I missed here but these n...
   Author: Vladimir Rodionov, 2010-12-09, 19:14
[expand - 3 more] - RE: Local sockets - HBase - [mail # dev]
...Unless you write your own, optimized for M/R applications. Yes, application level I/O scheduler for M/R kind of applications can be mu ch efficient than  standard Linux I/O scheduler. B...
   Author: Vladimir Rodionov, 2010-12-06, 21:39
RE: count of rows in table - HBase - [mail # dev]
...I think topic starter prefers something like: "select count(*) from table" and not to launch M/R job for this purpose.  Best regards, Vladimir Rodionov Principal Platform Engineer Carri...
   Author: Vladimir Rodionov, 2010-07-29, 22:00
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