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Re: LZO vs GZIP vs NO COMPREESSION: why is GZIP the winner ??? - HBase - [mail # user]
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...Yes, I run my tests several times and the difference was stable. Le 01/03/10 20:16, Jean-Daniel Cryans a �crit :...
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Author: Vincent Barat,
2010-03-02, 10:42
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Re: LZO vs GZIP vs NO COMPREESSION: why is GZIP the winner ??? - HBase - [mail # user]
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... Le 01/03/10 01:20, Dan Washusen a �crit : You are right, there is no region split when I use no compression. Nevertheless, as you say, if everything is in the memstore, how can...
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Author: Vincent Barat,
2010-03-01, 15:18
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Re: LZO vs GZIP vs NO COMPREESSION: why is GZIP the winner ??? - HBase - [mail # user]
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...The impact of my cluster architecture on the performances is obviously the same in my 3 test cases. Providing that I only change the compression type between tests, I don't under...
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Author: Vincent Barat,
2010-02-28, 17:30
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Re: LZO vs GZIP vs NO COMPREESSION: why is GZIP the winner ??? - HBase - [mail # user]
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...Unfortunately I can post only some snapshots. I have no region split (I insert just 100000 rows so there is no split, except when I don't use compression). I use HBase 0.20...
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Author: Vincent Barat,
2010-02-25, 10:49
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Re: LZO vs GZIP vs NO COMPREESSION: why is GZIP the winner ??? - HBase - [mail # user]
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...Yes of course. We use a 4 machine cluster (4 large instances on AWS): 8 GB RAM each, dual core CPU. 1 is for the Hadoop and HBase namenode / masters, and 3 are hosting the ...
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Author: Vincent Barat,
2010-02-24, 09:52
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LZO vs GZIP vs NO COMPREESSION: why is GZIP the winner ??? - HBase - [mail # user]
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...Hello, I did some testing to figure out which compression algo I should use for my HBase tables. I thought that LZO was the good candidate, but it appears that it is the wo...
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Author: Vincent Barat,
2010-02-23, 18:39
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How to use hbase.client.scanner.caching? - HBase - [mail # user]
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...Hello, I'm working on optimizing the HBase loader for PIG. To do so, I use the HTable.setScannerCaching() call and it works well, but it requires to modify the Java source ...
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Author: Vincent Barat,
2010-02-10, 17:03
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major_compact progress report ? - HBase - [mail # user]
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...Hello, I'm trying to apply major_compact on some of my tables to enable GZ compression on the fly. when I do: $ major_compact 'table" I don't see any info and I...
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Author: Vincent Barat,
2010-02-08, 16:23
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