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RE: Performance between HBaseClient scan and HFileReaderV2 - HBase - [mail # user]
...HBase scanner MUST guarantee correct order of KeyValues (coming from different HFile's), filter condition+ filter condition on included column families and qualifiers, time range, max versio...
   Author: Vladimir Rodionov, 2014-01-02, 18:30
RE: Consistent Backup strategy - HBase - [mail # user]
...Offline snapshots?  Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [EMAIL PROTECTED]  ________________________________________ Fr...
   Author: Vladimir Rodionov, 2013-12-23, 19:02
RE: Performance tuning - HBase - [mail # user]
...You will get better overall performance by increasing # of regions (salt buckets)  With 23 x 32 cpu I would try 300 regions at least.  Best regards, Vladimir Rodionov Principal Pla...
   Author: Vladimir Rodionov, 2013-12-22, 00:07
[expand - 1 more] - RE: 3-Hour Periodic Network/CPU/Disk/Latency Spikes - HBase - [mail # user]
...Available HBase API allows to compact table's regions independently. It can be cron job, script or client application which connects to HBase cluster, selects regions and trigger compaction,...
   Author: Vladimir Rodionov, 2013-12-14, 00:53
RE: Client API best practices for my use case - HBase - [mail # user]
...1. Scanner caching has nothing to do with caching. It sets the number of rows per one RPC call which server transfers to client.    Usually, it helps to improve scanner performance...
   Author: Vladimir Rodionov, 2013-12-11, 04:50
[expand - 1 more] - RE: hbase schema design - HBase - [mail # user]
...100 writes/updates per min is very low number and HBase, of course, is able to sustain 1.5 update/sec (if not GBs per update) 1000 concurrent users and minimum query latency - probably possi...
   Author: Vladimir Rodionov, 2013-12-11, 04:34
RE: Default value for Periodic Flusher - HBase - [mail # user]
...I do agree that flush interval must be configurable (I think its configurable).   Nope. The reality is even worse than one could imagine.  Memstore 'size' is estimated Java heap us...
   Author: Vladimir Rodionov, 2013-12-10, 22:40
[expand - 1 more] - RE: Practical Upper Limit on Number of Version Stored? - HBase - [mail # user]
...Michael,  Both: columns and timestamps are valid choices. Events have sources and in my approach source is in rowkey and time is in timestamp.  In your approach you embed time into...
   Author: Vladimir Rodionov, 2013-12-06, 18:33
RE: HBase Large Load Issue - HBase - [mail # user]
...Do not store your files in HBase, store only references.  Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [EMAIL PROTECTED]  _____...
   Author: Vladimir Rodionov, 2013-12-04, 01:23
[expand - 1 more] - Re: [Shadow Regions / Read Replicas ] - HBase - [mail # dev]
...Be pro-active, predict node failure (slow requests recently), detect possible router/network issues (syslog on each node), temporal network partitions are bad,  but they usually affect ...
   Author: Vladimir Rodionov, 2013-12-03, 22:48
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