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[expand - 1 more] - Re: slow operation in postPut - HBase - [mail # user]
...Use HTablePool instead. For more infor, http://hbase.apache.org/book/client.html.   On Thu, Aug 1, 2013 at 3:32 PM, yonghu  wrote:  ...
   Author: yonghu, 2013-08-01, 13:37
Re: Data missing in import bulk data - HBase - [mail # user]
...The ways that you can lose data in my point of views:  1. some tuples share the same row-key+cf+column. Hence, when you load your data in HBase, they will be loaded into the same column...
   Author: yonghu, 2013-07-24, 08:06
Re: How to join 2 tables using hadoop? - HBase - [mail # user]
...You can write one MR job to finish this. First read two tables at Map function, the output key will be the reference key for one table and primary key for the other table. At the Reduce func...
   Author: yonghu, 2013-07-19, 09:35
[expand - 1 more] - Re: several doubts about region split? - HBase - [mail # user]
...Thanks for your quick response!  For the question one, what will be the latency? How long we need to wait until the daughter regions are again online?  regards!  Yong   &...
   Author: yonghu, 2013-07-17, 14:10
a question about assigning timestamp? - HBase - [mail # user]
...Hello,  specifying timestamp, the server will generate a TS for me! I wonder if the "server" means the master node or regionservers? In my understanding, the server means the regionserv...
   Author: yonghu, 2013-07-13, 08:22
[expand - 2 more] - Re: Deleting range of rows from Hbase. - HBase - [mail # user]
...So, I can understand it as a predefined coprocessor. :)  regards!  Yong   On Thu, Jul 4, 2013 at 1:12 PM, Anoop John  wrote:  ...
   Author: yonghu, 2013-07-04, 11:35
Re: HBase failure scenarios - HBase - [mail # user]
...Hi Lucas,  First, the write request for HBase consists of two parts: 1. Write into WAL; 2. Write into Memstore, when Memstore reaches the threshold, the data in Memstore will be flushed...
   Author: yonghu, 2013-06-11, 06:15
[expand - 1 more] - Re: Poor HBase map-reduce scan performance - HBase - [mail # user]
...Dear Sandy,  Thanks for your explanation.  However, what I don't get is your term "client", is this "client" means MapReduce jobs? If I understand you right, this means Map functio...
   Author: yonghu, 2013-06-05, 18:14
Re: Change data capture tool for hbase - HBase - [mail # user]
...Hello,  I have presented 5 CDC approaches based on HBase and published my results in adbis 2013.  regards!  Yong   On Mon, Jun 3, 2013 at 11:16 AM, yavuz gokirmak  w...
   Author: yonghu, 2013-06-03, 09:41
Re: Doubt Regading HLogs - HBase - [mail # user]
...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...
   Author: yonghu, 2013-05-17, 11:40
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB