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Is it possible to indicate the column scan order when scanning table? - HBase - [mail # user]
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...Dear all, I wonder if it is possible to indicate the column scan order when scanning table. For example, if I have two column families cf1 and cf2 and I create a scan object. Is the ta...
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Author: yonghu,
2013-02-07, 17:23
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Re: Json+hbase - HBase - [mail # user]
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...I think you can treat id as row key. and address-type/home or address-type/office as column family. each address can be treated as column. The thing is how you can transform your json metada...
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Author: yonghu,
2013-02-04, 16:35
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Re: Is there a way to close automatically log deletion in HBase? - HBase - [mail # user]
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...Thanks for your useful information. By the way, can you give me an example about how I can define the customized logcleaner class. regards! Yong On Sat, Feb 2, 2013 at 1:54...
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Author: yonghu,
2013-02-02, 15:51
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Re: Is there a way to close automatically log deletion in HBase? - HBase - [mail # user]
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...Dear Ram, Thanks for your response. Yes Log means WAL logs. Now, I can define a postWALWrite trigger to write the WAL entries into the specific file as I want, however, it's too ...
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Author: yonghu,
2013-02-02, 10:09
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Is there a way to close automatically log deletion in HBase? - HBase - [mail # user]
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...Hello, For some reasons, I need to analyze the log of hbase. However, the log will be automatically deleted by GC of JVM (if I understand right). I wonder if there is a way to close au...
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Author: yonghu,
2013-02-02, 08:01
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How can I set column information when I use YCSB to test HBase? - HBase - [mail # user]
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...Dear all, I read the information of https://github.com/brianfrankcooper/YCSB/wiki/Running-a-Workload For example, I can indicate the column family name when I issue the command l...
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Author: yonghu,
2013-01-19, 06:48
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Re: Hbase Question - HBase - [mail # user]
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...I think you can take a look at your row-key design and evenly distribute your data in your cluster, as you mentioned even if you added more nodes, there was no improvement of performance. Ma...
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Author: yonghu,
2012-12-28, 19:38
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Re: Coprocessor slow down problem! - HBase - [mail # user]
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...Hi Anoop, Can you give me a more detailed information about how can I take a look at RS threads doing? Thanks! Yong On Sat, Dec 1, 2012 at 9:23 AM, ramkrishna vasudev...
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Author: yonghu,
2012-12-02, 19:59
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Re: Can we insert into Hbase without specifying the column name? - HBase - [mail # user]
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...Hi Rams, yes. You can. See follows: hbase(main):001:0> create 'test1','course' 0 row(s) in 1.6760 seconds hbase(main):002:0> put 'test1','tom','course',90 0 row(s) in...
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Author: yonghu,
2012-11-26, 10:29
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Re: Log files occupy lot of Disk size - HBase - [mail # user]
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...I think you can set setWriteToWAL() method to false to reduce the amount of log infor. But you may get risks when your cluster is down. regards! yong On Fri, Nov 23, 2012 at 7:58...
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Author: yonghu,
2012-11-23, 13:57
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