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[HBASE-5770] Add a clock skew warning threshold - HBase - [issue]
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...There's currently an exception thrown by the master when a region server attempts to start up with clock skew greater than some configured amount (defaulting to 30 seconds). However, it'd be...
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http://issues.apache.org/jira/browse/HBASE-5770
Author: Ian Varley,
2012-04-13, 18:32
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Re: Schema Updates: what do you do today? - HBase - [mail # user]
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...Thanks, Andy. Yeah, a tool that compares a schema definition with a running cluster, and gives you a way to apply changes (without offlining, where po ssible), would be pretty sweet. &...
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Author: Ian Varley,
2012-04-09, 19:39
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Schema Updates: what do you do today? - HBase - [mail # user]
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...All: I'm doing a little research into various ways to apply schema modifications to an HBase cluster. Anybody care to share with the list what you currentl y do? E.g. - Co...
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Author: Ian Varley,
2012-04-09, 16:08
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Re: Key Design Question for list data - HBase - [mail # user]
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...Great, glad to help Derek! One clarification, on space usage: on disk, the row key (and column family) is repeated for every cell. So if you have rows like: user123: ...
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Author: Ian Varley,
2012-04-04, 18:15
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Re: Key Design Question for list data - HBase - [mail # user]
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...Hi Derek, If I understand you correctly, you're ultimately trying to store triples in the form "user, valueid, value", right? E.g., something like: "user123, firstname, Pau...
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Author: Ian Varley,
2012-04-03, 19:59
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Re: HBase & BigTable + History: Can it run decently on a 512MB machine? What's the difference between the two? - HBase - [mail # user]
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...DS, HBase is an open source project, so you can read the source code and make t hat determination for yourself. It was first created based on the same idea s in the Bigtable paper (pub...
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Author: Ian Varley,
2012-03-06, 00:48
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Re: Scanning the last N rows - HBase - [mail # user]
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...Yes, you do have to worry about efficiency. If your rows aren't ordered in the table (by rowkey) according to the update date, the server will be havi ng to scan the entire table. Your...
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Author: Ian Varley,
2012-03-02, 21:49
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Re: Seeking HBase schema design examples - HBase - [mail # user]
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...Yes, that's a great one - and it's one of the few schemas I've found that's published online and well explained. I think we need more of that! :) Ian On Feb 23, 2012, at 1:...
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Author: Ian Varley,
2012-02-23, 14:16
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Seeking HBase schema design examples - HBase - [mail # user]
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...All: I’m doing a study on HBase schema design, with a goal of contributing bac k a presentation or summary about how data modeling is practically done in HBase. I'd like to base ...
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Author: Ian Varley,
2012-02-22, 21:40
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Re: Solr & HBase - Re: How is Data Indexed in HBase? - HBase - [mail # user]
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...One minor clarification: HBase is primarily built for retrieving a single row at a time based on a predetermined and known location (the key). Substitute that with: "HBase is pri...
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Author: Ian Varley,
2012-02-22, 18:18
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