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Re: using date as key - HBase - [mail # user]
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...Lior, If you already know the key distribution you can create all the regions in advance. Are you inserting a single day or multiple days? 5X is a good improvement. ...
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Author: Cosmin Lehene,
2011-03-28, 07:04
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Re: HBase not scaling well - HBase - [mail # user]
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...Hi Hari, Could you do some realtime monitoring (htop, iptraf, iostat) and report the results? Also you could add some timers to the map-reduce operations: meas ure average opera...
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Author: Cosmin Lehene,
2010-10-29, 08:05
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Re: [VOTE] Release 'development release' HBase 0.89.2010924 rc1? - HBase - [mail # dev]
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...+1 I tested the build over the weekend running MR jobs and some write performa nce testing. It looks good. Cosmin On Sep 25, 2010, at 2:38 AM, Stack wrote: branch. e-0.89....
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Author: Cosmin Lehene,
2010-10-04, 15:33
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Re: High OS Load Numbers when idle - HBase - [mail # user]
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...George, Did you try to monitor the CPU in real-time to see any patterns? Does it do any CPU spikes? Even so, the load averages should be matched against the n umber of cores/hyp...
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Author: Cosmin Lehene,
2010-08-18, 07:26
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Re: Row level locking? - HBase - [mail # user]
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...On Jul 16, 2010, at 6:41 PM, Michael Segel wrote: Thanks for the response. (You don't need to include the cc ...) With respect to the row level locking ... I was intereste...
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Author: Cosmin Lehene,
2010-07-16, 16:16
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Re: Row level locking? - HBase - [mail # user]
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...Currently a row is part of a region and there's a single region server serv ing that region at a particular moment. So when that row is updated a lock is acquired for that row until th...
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Author: Cosmin Lehene,
2010-07-16, 11:34
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Re: transactional hbase - HBase - [mail # user]
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...Hi, HBase supports row-level atomic operations. If you need to update more than a row in a single transaction you'll have to use a coordination mechanism. You can use Zook...
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Author: Cosmin Lehene,
2010-07-16, 09:24
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Re: ORM Question - HBase - [mail # user]
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...Hi Ananth, I know about GORM http://www.grails.org/plugin/gorm-hbase And about DataNucleus JPA plugin h ttp://www.datanucleus.org/products/accessplatform/hbase/support.html Also ...
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Author: Cosmin Lehene,
2010-06-10, 19:58
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Re: Please welcome Todd Lipcon as our latest committer - HBase - [mail # dev]
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...Congrats Todd, HBase! :) Cosmin On May 25, 2010, at 9:54 AM, Stack wrote: ...
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Author: Cosmin Lehene,
2010-05-25, 08:49
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Re: Release killed... RC3 coming soon WAS -> Re: [VOTE] Shall we release hbase-0.20.4 Release Candidate 2 as hbase-0.20.4? (WAS --> Re: [VOTE] Shall we release hbase-0.20.4 Release Candidate 1 as hbase-0.20.4?) - HBase - [mail # dev]
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...I've noticed there are more places where exceptions tend to be eaten, or tr ansformed in a generic IOException. Working around this tends to obscure lo gic sometimes. More, most of the...
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Author: Cosmin Lehene,
2010-04-23, 05:51
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