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Re: why reduce doesn't work by HBase? - HBase - [mail # user]
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...Thanks for your suggestions On Thu, Nov 15, 2012 at 9:56 PM, Bertrand Dechoux wrote:...
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Author: yonghu,
2012-11-16, 12:53
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why reduce doesn't work by HBase? - HBase - [mail # user]
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...Dear all, I use HBase as data source and hdfs as data sink. I wrote the program which calculate the versions for each cell as follows: public class ReturnMore { //only Map side h...
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Author: yonghu,
2012-11-15, 19:42
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Re: Why Regionserver is not serving when I set the WAL trigger? - HBase - [mail # user]
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...The problem is caused by the code, as I create the configuration by myself. The correct way is to use getConfiguration() method. regards! Yong On Sat, Nov 10, 2012 at 4:12 ...
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Author: yonghu,
2012-11-12, 09:33
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Why Regionserver is not serving when I set the WAL trigger? - HBase - [mail # user]
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...Dear All, I used hbase 0.94.1 and implemented the test example of WAL trigger like: public class WalTrigger extends BaseRegionObserver implements WALObserver{ public boolean p...
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Author: yonghu,
2012-11-10, 15:07
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Re: A question of storage structure for memstore? - HBase - [mail # user]
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...Thanks for your responses. yong On Mon, Oct 22, 2012 at 3:05 PM, Anoop Sam John wrote:...
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Author: yonghu,
2012-10-22, 14:13
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A question of storage structure for memstore? - HBase - [mail # user]
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...Dear All, In the description it mentions that a Store file (per column family) is composed of one memstore and a set of HFiles. Does it imply that for every column family there is a co...
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Author: yonghu,
2012-10-22, 11:25
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Re: Can I use coprocessor to record the deleted data caused by ttl? - HBase - [mail # user]
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...I want to record the data change from the source table. Thanks for your apply. regards! Yong On Sat, Sep 1, 2012 at 1:01 AM, lars hofhansl wrote:...
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Author: yonghu,
2012-09-01, 13:14
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Can I use coprocessor to record the deleted data caused by ttl? - HBase - [mail # user]
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...Dear All, I wonder if I can use coprocessor to record the deleted data caused by ttl. Any ideas? regards! Yong...
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Author: yonghu,
2012-08-31, 20:13
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Re: What happened in hlog if data are deleted cuased by ttl? - HBase - [mail # user]
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...Sorry for that. I didn't use the right parameter. Now I get the point. regards! Yong On Wed, Aug 22, 2012 at 10:49 AM, Harsh J wrote:...
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Author: yonghu,
2012-08-22, 10:02
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Re: What happened in hlog if data are deleted cuased by ttl? - HBase - [mail # user]
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...And also an interesting point is that the ttl data will not exist in hfile. I have made the following test, hbase(main):003:0> create 'test',{TTL=>'200',NAME=>'course'} 0 row(...
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Author: yonghu,
2012-08-22, 08:35
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