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Re: Using doubles and longs as ordering row values - HBase - [mail # user]
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...Hello Lars, Thank you. Where can I find the lily library? I can't find it on github or Google. /David On Fri, Nov 30, 2012 at 3:54 AM, lars hofhansl wrote: ...
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Author: David Koch,
2012-12-01, 15:01
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Re: PrefixFilter is not working with long in HBase - HBase - [mail # user]
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...Hi, If your row keys really are really longs, i.e stored as: Long.getBytes() and NOT Long.toString().getBytes() than you could just use: Filter rowFilter = new RowFilter(CompareO...
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Author: David Koch,
2012-11-23, 13:09
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Re: Custom versioning best practices - HBase - [mail # user]
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...Hello Michael, Thank you for your response. By the way, is it possible to set setMaxVersions per column family on a scan? /David On Thu, Nov 22, 2012 at 5:11 PM, Mic...
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Author: David Koch,
2012-11-22, 20:47
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Custom versioning best practices - HBase - [mail # user]
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...Hello, I was thinking of using versions with custom timestamps to store the evolution of a column value - as opposed to creating several (time_t, value_at_time_t) qualifier-value pairs...
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Author: David Koch,
2012-11-22, 13:55
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Re: Scan performance on compressed column families - HBase - [mail # user]
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...Hello Oliver, Thank you for the clarification. As Kevin also pointed out, I guess we will just have to test compression in our environment. Regards, /David On Fri, N...
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Author: David Koch,
2012-11-11, 18:08
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Re: Scan performance on compressed column families - HBase - [mail # user]
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...*BUMP* Sorry, /David On Sat, Nov 3, 2012 at 3:57 PM, David Koch wrote: ...
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Author: David Koch,
2012-11-07, 13:09
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Re: HBase scan performance decreases over time. - HBase - [mail # user]
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...Hello Ted, We never initiate major compaction manually. I have not looked at I/O balance between nodes in detail. We have noticed that after running for a couple of weeks HBase seems t...
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Author: David Koch,
2012-11-03, 19:50
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HBase scan performance decreases over time. - HBase - [mail # user]
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...Hello, Every now and then we need to flatten our cluster and re-import all data from log files (changes in data format, etc.) Afterwards we notice a significant increase in scan perfor...
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Author: David Koch,
2012-11-03, 15:12
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Scan performance on compressed column families - HBase - [mail # user]
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...Hello, Are scans faster when compression is activated? The HBase book by Lars George seems to suggest so (p424, Section on "Compression" in chapter "Performance Tuning"). "... co...
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Author: David Koch,
2012-11-03, 14:57
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Efficient way to sample from large HBase table. - HBase - [mail # user]
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...Hello, I need to sample 1million rows from a large HBase table. What is an efficient way of doing this? I thought about a RandomRowFilter on a scan of the source table to get app...
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Author: David Koch,
2012-10-12, 15:04
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