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Re: HBase and Hadoop version - HBase - [mail # user]
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...On Tue, Mar 26, 2013 at 6:56 AM, Robert Hamilton wrote: Nothing, in fact I've deployed pretty much that setup in production before. J-D...
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Author: Jean-Daniel Cryans,
2013-03-26, 16:36
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[HBASE-7700] TestColumnSeeking is mathematically bound to fail - HBase - [issue]
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...First I'd like to say that TestColumnSeeking is a bad test. It's not documented, it's non-deterministic, it's 2 methods with almost the same code.So in each test it populates column lists th...
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http://issues.apache.org/jira/browse/HBASE-7700
Author: Jean-Daniel Cryans,
2013-03-23, 04:53
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Re: How to prevent major compaction when doing bulk load provisioning? - HBase - [mail # user]
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...On Fri, Mar 22, 2013 at 12:12 AM, Nicolas Seyvet wrote: If the compaction algo selects all the files for compaction, it gets upgraded into a major compaction because it's essenti...
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Author: Jean-Daniel Cryans,
2013-03-22, 16:32
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Re: Question about compactions - HBase - [mail # user]
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...On Thu, Mar 21, 2013 at 1:44 PM, Brennon Church wrote: Yeah, considering that you have 8 nodes and probably use a replication factor of 3, then I would expect you to be at least ...
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Author: Jean-Daniel Cryans,
2013-03-21, 20:53
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Re: How to prevent major compaction when doing bulk load provisioning? - HBase - [mail # user]
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...On Thu, Mar 21, 2013 at 12:06 PM, Nicolas Seyvet wrote: I worked on a very similar use case recently and would recommend against doing bulk loads like this. The way bulk loaded f...
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Author: Jean-Daniel Cryans,
2013-03-21, 20:21
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Re: How to prevent major compaction when doing bulk load provisioning? - HBase - [mail # user]
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...You are likely just hitting the threshold for a minor compaction and by picking up all the files (I'm making a guess that it does) it gets upgraded to a major compaction. The threshold is 3 ...
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Author: Jean-Daniel Cryans,
2013-03-21, 18:03
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Re: Question about compactions - HBase - [mail # user]
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...On Thu, Mar 21, 2013 at 6:46 AM, Brennon Church wrote: FWIW major compacting isn't even needed if you don't update or delete cells so do consider that too. The problem with...
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Author: Jean-Daniel Cryans,
2013-03-21, 17:49
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Re: Consistency issue when a Put is in the memstore but a more recent Delete is cleaned in a major compaction - HBase - [mail # dev]
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...On Tue, Mar 19, 2013 at 6:50 PM, lars hofhansl wrote: The bulk load case doesn't have those properties. The Delete is done in order, but it gets into an HFile before the Put is f...
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Author: Jean-Daniel Cryans,
2013-03-20, 18:01
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Re: Does HBase RegionServer benefit from OS Page Cache - HBase - [mail # user]
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...First, MSLAB has been enabled by default since 0.92.0 as it was deemed stable enough. So, unless you are on 0.90, you are already using it. Also, I'm not sure why you are referencing t...
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Author: Jean-Daniel Cryans,
2013-03-20, 17:30
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Consistency issue when a Put is in the memstore but a more recent Delete is cleaned in a major compaction - HBase - [mail # dev]
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...Hey guys, I looked around a bit and couldn't find a jira directly related to this. Here's an example of inconsistency in every HBase version (although the shell won't let you do it in ...
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Author: Jean-Daniel Cryans,
2013-03-19, 20:42
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