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Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
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...Lars, Ok... he's talking about buckets. So when you have N buckets, what is the least number of get()s do you need to fetch the single row? (Hint: The answer is N) Ho...
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Author: Michael Segel,
2012-12-20, 13:20
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Re: Many scanner opening - HBase - [mail # user]
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...I'd suggest looking in to a schema design change. On Dec 18, 2012, at 2:01 AM, Eugeny Morozov wrote: ...
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Author: Michael Segel,
2012-12-20, 13:14
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Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
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...Ok, Lets try this one more time... If you salt, you will have to do a *FULL* *TABLE* *SCAN* in order to retrieve the row. If you do something like a salt that uses only &...
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Author: Michael Segel,
2012-12-20, 01:23
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Re: recommended nodes - HBase - [mail # user]
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...Yeah, I couldn't argue against LVMs when talking with the system admins. In terms of speed its noise because the CPUs are pretty efficient and unless you have more than 1 drive p...
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Author: Michael Segel,
2012-12-20, 01:14
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Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
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...And there's the rub. Hashing is one thing. Salting is another. Hashing good. Salting bad. That simple. BTW, truncating the hash and appending the key falls in to ha...
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Author: Michael Segel,
2012-12-20, 01:09
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Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
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...Ok... So you use a random byte or two at the front of the row. How do you then use get() to find the row? How do you do a partial scan()? Do you start to see the problem? ...
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Author: Michael Segel,
2012-12-20, 01:02
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Re: Customizing hbase shell's table formatting - HBase - [mail # user]
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...Well the shell is written in JRuby which is pretty much Ruby. That's the best way to enhance the shell. On Dec 19, 2012, at 2:56 PM, Adam Phelps wrote: ...
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Author: Michael Segel,
2012-12-19, 21:04
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Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
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...I think you missed the point. You seem to think that salting is ok. I want you to walk through an example so that we can discuss it. ;-) On Dec 19, 2012, at 2:51 PM, lars ...
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Author: Michael Segel,
2012-12-19, 21:02
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Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
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...Ok, Maybe I'm missing something. Why don't you walk me through the use of a salt example. On Dec 19, 2012, at 12:37 PM, lars hofhansl wrote: ...
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Author: Michael Segel,
2012-12-19, 19:46
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Re: Customizing hbase shell's table formatting - HBase - [mail # user]
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...How is your JRuby skills? On Dec 19, 2012, at 1:05 PM, Adam Phelps wrote: ...
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Author: Michael Segel,
2012-12-19, 19:17
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