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[expand - 4 more] - RE: HBase Client Performance Bottleneck in a Single Virtual Machine - HBase - [mail # user]
...This thread describes my similar findings:  http://mail-archives.apache.org/mod_mbox/hbase-dev/201307.mbox/%3CDC5EBE7F3610EB4CA5C7E92D76873E1517ECF1DCCE%40exchange2007.carrieriq.com%3E ...
   Author: Vladimir Rodionov, 2013-11-06, 19:56
RE: HBase Delete - based on non-rowkey columns - HBase - [mail # user]
...BulkDeleteEndpoint coprocessor to your help. Its the endpoint coprocessor. Refer HBase 0.94+ API and HBase book on how to use it for bulk delete operations.  Best regards, Vladimir Rodi...
   Author: Vladimir Rodionov, 2013-11-06, 18:46
[expand - 1 more] - RE: How to change split policy of a specific existing table(not global)?‏ - HBase - [mail # user]
...There is a ticket for that :)  https://issues.apache.org/jira/browse/HBASE-9218  Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [...
   Author: Vladimir Rodionov, 2013-11-05, 17:43
RE: Scanner Caching with wildly varying row widths - HBase - [mail # user]
...setBatch and setCaching are totally independent from each other. The latter one controls numbers of rows transferred from server to client in one RPC call, the former one controls how many c...
   Author: Vladimir Rodionov, 2013-11-05, 00:38
RE: setCaching and setBatch - HBase - [mail # user]
...I think, setBatch is  your OOME protection as since it limits the total amount of KeyValues processed in a single call to StoreScanner.next.  Best regards, Vladimir Rodionov Princi...
   Author: Vladimir Rodionov, 2013-11-04, 22:08
RE: HBase wont responding when one region server goes down - HBase - [mail # user]
...Google "HBase MTTR improvements in 0.96". 10-15 minutes of downtime is normal on versions prior to 0.96 with default HBase configuration settings.  Best regards, Vladimir Rodionov Princ...
   Author: Vladimir Rodionov, 2013-10-29, 03:44
[HBASE-9769] Improve performance of a Scanner with explicit column list when rows are small/medium size - HBase - [issue]
http://issues.apache.org/jira/browse/HBASE-9769    Author: Vladimir Rodionov, 2013-10-29, 03:33
RE: Linear Scalability in HBase - HBase - [mail # user]
...You can not saturate region server with one client (unless you probably use hbase-async) if all data is cached in RAM. In our performance tests we have run 10 clients (on different hosts) wi...
   Author: Vladimir Rodionov, 2013-10-25, 18:21
RE: Add Columnsize Filter for Scan Operation - HBase - [mail # user]
...Using HBase client API (scanners) for M/R is so oldish :). HFile has well defined format and it is much more efficient to read them directly.  Best regards, Vladimir Rodionov Principal ...
   Author: Vladimir Rodionov, 2013-10-24, 23:09
[expand - 1 more] - RE: filtering rows for column values not null - HBase - [mail # user]
...This will work ONLY if you add single column to scan. If you scan multiple columns you will need additional filter (reverse SkipFilter) which filter outs all rows (outputs of SingleColumnVal...
   Author: Vladimir Rodionov, 2013-10-24, 16:35
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