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Re: Poor HBase map-reduce scan performance - HBase - [mail # user]
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...I'd say go to Avro over protobufs in terms of redesigning your schema. With respect to CPUs, you don't say what your system looks like. Intel vs AMD , Num physical cores, what else yo...
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Author: Michael Segel,
2013-05-01, 14:24
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Re: Read access pattern - HBase - [mail # user]
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...Unfortunately as this idea keeps popping up, you are going to have this discussion. 1) As you admit... salting is bad when your primary access vector is get()s. 2) Range s...
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Author: Michael Segel,
2013-05-01, 14:14
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Re: HBase and Datawarehouse - HBase - [mail # user]
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...Hmmm I don't recommend HBase in situations where you are not running a M/R Framework. Sorry, as much as I love HBase, IMHO there are probably better solutions for a standalone NoSQL Da...
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Author: Michael Segel,
2013-04-30, 18:42
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Re: HBase and Datawarehouse - HBase - [mail # user]
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...Multiple RS per host? Huh? That seems very counter intuitive and potentially problematic w M/R jobs. Could you expand on this? Thx -Mike On Apr 30, 2013...
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Author: Michael Segel,
2013-04-30, 18:14
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Re: Read access pattern - HBase - [mail # user]
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...Sure. By definition, the salt number is a random seed that is not associated with the underlying record. A simple example is a round robin counter (mod the counter by 10 yielding...
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Author: Michael Segel,
2013-04-30, 17:06
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Re: Read access pattern - HBase - [mail # user]
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...Geez that's a bad article. Never salt. And yes there's a difference between using a salt and using the first 2-4 bytes from your MD5 hash. (Hint: Salts are random. Your h...
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Author: Michael Segel,
2013-04-30, 15:57
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Re: HBase and Datawarehouse - HBase - [mail # user]
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...Tell me why your RS needs to be that large? (> 8 GB. ) I think the answer is that it depends. Especially when you start to add in coprocessors. I'm not saying that there...
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Author: Michael Segel,
2013-04-30, 13:17
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Re: Dual Hadoop/HBase configuration through same client - HBase - [mail # user]
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...This was answered on the linkedIn HBase discussion group. Create two configuration instances and then have each one point to the cluster you want to connect to. Then when you c...
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Author: Michael Segel,
2013-04-28, 02:35
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Re: Coprocessors - HBase - [mail # user]
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...Hi, Lets reiterate what you've said.... You have a set of objects and you have some field type where F1 which is part of your composite key. You want to fetch back a...
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Author: Michael Segel,
2013-04-26, 02:43
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Re: Coprocessors - HBase - [mail # user]
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...I don't think Phoenix will solve his problem. He also needs to explain more about his problem before we can start to think about the problem. On Apr 25, 2013, at 4:54 PM,...
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Author: Michael Segel,
2013-04-25, 22:12
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