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Re: schema design: rows vs wide columns - HBase - [mail # user]
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...Wide area :-) I agree with Michael, perhaps the best explanation could be to explicit *WHEN* adding extra CF perfectly makes sense. On Tue, Apr 16, 2013 at 4:35 PM, Michael Sege...
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Author: Adrien Mogenet,
2013-04-28, 15:23
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Re: HBase random read performance - HBase - [mail # user]
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...Using bloom filter is almost mandatory there; You might also want to try Short Circuit Reads and be sure you get 100% data locality (major_compact your table first) On Sat, Apr 13, 20...
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Author: Adrien Mogenet,
2013-04-13, 16:00
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Re: Regionserver goes down while endpoint execution - HBase - [mail # user]
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...Sure, and it might be costly if your CP is building secondary index through `Put' to external tables/regions. Each of your RPC call will generate another RPC call. Also, take note that your ...
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Author: Adrien Mogenet,
2013-03-26, 07:42
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[HBASE-7782] HBaseTestingUtility.truncateTable() not acting like CLI - HBase - [issue]
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...I would like to discuss the behavior of the truncateTable() method of HBaseTestingUtility. It's currently only removing the data through a scan/delete pattern.However, the truncate command i...
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http://issues.apache.org/jira/browse/HBASE-7782
Author: Adrien Mogenet,
2013-02-08, 17:42
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Re: Is "synchronized" required? - HBase - [mail # user]
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...I probably don't know your application enough to make an accurate answer, but you could have a look at asynchbase [ https://github.com/OpenTSDB/asynchbase] if you have thread-safety issues a...
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Author: Adrien Mogenet,
2013-02-06, 07:45
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Re: Is "synchronized" required? - HBase - [mail # user]
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...Beware, HTablePool is not totally thread-safe as well: https://issues.apache.org/jira/browse/HBASE-6651. On Mon, Feb 4, 2013 at 9:42 PM, Haijia Zhou wrote: Adrien ...
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Author: Adrien Mogenet,
2013-02-04, 21:13
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Re: Tune MapReduce over HBase to insert data - HBase - [mail # user]
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...I didn't find documentation about these settings ; is it recommended to set it greater than the default value ("1") on modern servers ? Or is it an internal behavior we should not tune by ou...
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Author: Adrien Mogenet,
2013-02-04, 19:53
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Re: remove dead regions server - HBase - [mail # user]
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...The easiest way is to restart your HBaseMaster. The next active master will not register the dead RS. On Mon, Feb 4, 2013 at 1:07 PM, Samar Kumar wrote: Adrien Mog...
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Author: Adrien Mogenet,
2013-02-04, 19:08
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Re: Coprocessor HDFS jar hot deployment - HBase - [mail # user]
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...Yes of course ; CP is instantiated (and start() method is then called) when the region is starting. When disabling/enabling the table it will force all regions to be re-opened. On Thu...
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Author: Adrien Mogenet,
2013-01-31, 20:24
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Re: Storing images in Hbase - HBase - [mail # user]
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...Could HCatalog be an option ? Le 26 janv. 2013 21:56, "Jack Levin" a écrit : into to with servers? (or a purring wrote: if heap (the of memstore, the compactionQueueSize=0, HEAP ...
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Author: Adrien Mogenet,
2013-01-28, 10:01
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