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Re: coprocessor enabled put very slow, help please~~~ - HBase - [mail # user]
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...Why? This seems like an unnecessary overhead. You are writing code within the coprocessor on the server. Pessimistic code really isn't recommended if you are worried abou...
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Author: Michael Segel,
2013-02-18, 09:35
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Re: coprocessor enabled put very slow, help please~~~ - HBase - [mail # user]
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...I don't agree with Lars on the second half of his statement. Yes, there will be a performance hit when you go across regions because you're now going across the network to a second ma...
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Author: Michael Segel,
2013-02-18, 09:31
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Re: coprocessor enabled put very slow, help please~~~ - HBase - [mail # user]
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...Hmmm. Can you have async writes using a coprocessor? On Feb 17, 2013, at 7:17 PM, lars hofhansl wrote: Michael Segel | (m) 312.755.9623 Segel and Associ...
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Author: Michael Segel,
2013-02-18, 01:31
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Re: Row Key Design in time based aplication - HBase - [mail # user]
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...So its a *shameless* plug? :-) Depending on the project id, it could be a good key, but it would have to be something more meaningful than just a number. To answer the que...
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Author: Michael Segel,
2013-02-18, 01:29
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Re: Row Key Design in time based aplication - HBase - [mail # user]
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...I'm not sure how a SQL interface above HBase will solve some of the issues with regional hot spotting when using time as the key. Or the problem with always adding data to the right of the l...
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Author: Michael Segel,
2013-02-17, 23:18
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Re: Using HBase for Deduping - HBase - [mail # user]
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...Well, Maybe its a lack of sleep, but this is what I found... checkAndPut public boolean checkAndPut(byte[] row, &nbs...
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Author: Michael Segel,
2013-02-15, 01:43
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Re: Using HBase for Deduping - HBase - [mail # user]
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...What constitutes a duplicate? An over simplification is to do a HTable.checkAndPut() where you do the put if the column doesn't exist. Then if the row is inserted (TRUE) return ...
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Author: Michael Segel,
2013-02-15, 01:33
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Re: Empty a table - HBase - [mail # user]
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...I think its more akin of the typical 'truncate' command. Actually, if someone wanted to extend HBase Shell, I would imagine a simple Ruby er JRuby script could do this? (You would wan...
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Author: Michael Segel,
2013-02-07, 19:16
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Re: MapReduce to load data in HBase - HBase - [mail # user]
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...Pig is like any other scripting language. Therefore maintainable. Your script defines the schema of the data set and then does the processing you tell it to do. On Feb 7, 2013,...
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Author: Michael Segel,
2013-02-07, 13:22
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Re: How would you model this in Hbase? - HBase - [mail # user]
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...Overloading the time stamp aka the versions of the cell is really not a good idea. Yeah, I know opinions are like A.... everyone has one. ;-) But you have to be aware that if s...
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Author: Michael Segel,
2013-02-06, 21:49
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