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Re: Doubt Regading HLogs - HBase - [mail # user]
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...In this situation, you can set the logroll.period to a short value, let's say 3000 and then you can see your log file with current size after 3 seconds. To Nicolas, I...
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Author: yonghu,
2013-05-17, 11:40
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How can I set heap size for HBase? - HBase - [mail # user]
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...Dear All, I wonder how I can set heap size for HBase and what is the suitable portion compared to whole memory size? And the other question is that how many memory size I need to give ...
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Author: yonghu,
2013-03-11, 11:15
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Re: Possible to delete a specific cell? - HBase - [mail # user]
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...Hello, I think you can use HBase org.apache.hadoop.hbase.client.Delete class. It already supported to delete a specific version in a cell, see public Delete deleteColumn(byte[] family,...
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Author: yonghu,
2013-03-07, 20:56
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Re: Hbase table with a nested entity - HBase - [mail # user]
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...Hello Dastgiri, I don't think HBase can support original nested schema which you want to define. But you can still store your data in HBase. I figured out several possible solutions: &...
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Author: yonghu,
2013-02-27, 11:06
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Re: coprocessor enabled put very slow, help please~~~ - HBase - [mail # user]
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...Ok. Now, I got your point. I didn't notice the "checkAndPut". regards! Yong On Mon, Feb 18, 2013 at 1:11 PM, Michael Segel wrote:...
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Author: yonghu,
2013-02-18, 12:22
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Re: coprocessor enabled put very slow, help please~~~ - HBase - [mail # user]
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...Hi, Michael I don't quite understand what do you mean by "round trip back to the client". In my understanding, as the RegionServer and TaskTracker can be the same node, MR don't have t...
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Author: yonghu,
2013-02-18, 10:57
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Re: coprocessor enabled put very slow, help please~~~ - HBase - [mail # user]
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...Forget to say. I also tested MapReduce. It's faster than coprocessor. On Mon, Feb 18, 2013 at 10:01 AM, yonghu wrote:...
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Author: yonghu,
2013-02-18, 09:02
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Re: coprocessor enabled put very slow, help please~~~ - HBase - [mail # user]
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...Parkash, I have a six nodes cluster and met the same problem as you had. In my test, inserting one tuple using coprocessor is nearly 10 times slower than normal put operation. I think ...
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Author: yonghu,
2013-02-18, 09:01
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Re: Is it possible to indicate the column scan order when scanning table? - HBase - [mail # user]
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...Thanks for your response. I will take a look. yong On Thu, Feb 7, 2013 at 10:11 PM, Ted Yu wrote:...
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Author: yonghu,
2013-02-08, 05:36
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Re: Is it possible to indicate the column scan order when scanning table? - HBase - [mail # user]
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...Like a table can contain ttl data and static data without indicating ttl. So, I want to first scan the columns which have ttl restrictions and later the static columns. The goal that I want ...
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Author: yonghu,
2013-02-07, 20:01
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