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Re: multiple puts in reducer? - HBase - [mail # user]
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...Yes you can do it. But why do you have a reducer when running a m/r job against HBase? The trick in writing multiple rows... You do it independently of the output f rom the map() metho...
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Author: Michel Segel,
2012-02-28, 15:44
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Re: Hbase vs MongoDB - HBase - [mail # user]
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...What's your thesis? Designing a comprehensive PMI system? Something about NoSQL? If you're doing something like Pacs, you really don't want to store the imag es in the database. ...
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Author: Michel Segel,
2012-02-19, 00:23
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Re: help with schema - HBase - [mail # user]
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...Not easy to visualize... Assuming your access path to the data is based on students, then you would s erialize your college data as a column in the student's table. You ne...
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Author: Michel Segel,
2012-02-06, 12:43
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Re: PerformanceEvaluation results - HBase - [mail # user]
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...Tim, Here's the problem in a nutshell, With respect to hardware, you have 5.4k rpms ? 6 drive and 8 cores? Small slow drives, and still a ratio less than one when you...
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Author: Michel Segel,
2012-02-02, 04:24
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Re: No. of families - HBase - [mail # user]
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...Sorry, but you misunderstand. Implementing a hierarchical model in any NoSQL database is trivial. Sent from a remote device. Please excuse any typos... Mike S...
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Author: Michel Segel,
2011-12-31, 03:18
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Re: Could an EC2 machine to 4 times slower than local dev workstation? - HBase - [mail # user]
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...Hi, Yes the performance hit is normal. Looks like you're seeing network latency on disk I/O. Could also be a tuning issue. (differences in configurations...) Not sure how much. CPU dif...
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Author: Michel Segel,
2011-12-30, 18:28
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Re: Data management strategy - HBase - [mail # user]
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...Richard, Let's see if I understand what you want to do... You have some data and you want to store it in some table A. Some of the records/rows in this table have a limited life ...
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Author: Michel Segel,
2011-12-22, 13:21
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Re: About performance issue of Hive/HBase vs Hive/HDFS - HBase - [mail # user]
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...Hey Bruce, There's a bit more... Setting up the region size to help minimize the number of regions, then the re is tuning the GC and also setting up mslabs. You can c...
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Author: Michel Segel,
2011-12-21, 15:21
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Re: About performance issue of Hive/HBase vs Hive/HDFS - HBase - [mail # user]
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...Ok... Just my random thoughts... There definitely is overhead in HBase that doesn't exist when you are doing d irect access against a hive table. 4 to 5 times slower? I'd question how you &n...
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Author: Michel Segel,
2011-12-21, 12:52
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Re: Issue in using Hbase-explorer! - HBase - [mail # user]
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...HBase explorer is a third party tool, which has a lot of limitations. YMMV I think if you're having issues, you need to bug the author(s). Sent from a remote device. Pleas...
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Author: Michel Segel,
2011-12-17, 11:37
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