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Poor HDFS performances: "Slow BlockReceiver write packet to mirror" - Hadoop - [mail # user]
...Hi there,I'd like to submit a strange behavior while instanciating another newHadoop cluster, on a new hardware stack.Once everything got installed, as soon as we try to perform any I/Oopera...
   Author: Adrien Mogenet, 2015-01-16, 08:10
[HBASE-7782] HBaseTestingUtility.truncateTable() not acting like CLI - HBase - [issue]
...I would like to discuss the behavior of the truncateTable() method of HBaseTestingUtility. It's currently only removing the data through a scan/delete pattern.However, the truncate command i...
http://issues.apache.org/jira/browse/HBASE-7782    Author: Adrien Mogenet, 2014-08-26, 21:19
Re: How Hbase achieves efficient random access? - HBase - [mail # user]
...btw, another worth reading article about block caches:http://www.n10k.com/blog/blockcache-101/On Mon, Jul 7, 2014 at 8:26 AM, Vladimir Rodionov wrote:Adrien Mogenethttp://www.borntosegfault....
   Author: Adrien Mogenet, 2014-07-07, 16:29
Re: [Discuss] HBase with multiple threads - HBase - [mail # user]
...bq. "but in real it is one message write in whereas the other messagedropped."Have you tried to set logging at DEBUG level (hbase package on clientside)? You'll get helpful messages to analy...
   Author: Adrien Mogenet, 2014-06-07, 18:36
Re: How can we process complex logic on hbase - HBase - [mail # user]
...Could you give us an example of what you call "complex logic"?Perhaps putting this logic on client side could make sense? (probably notyou want, just asking...)On Sat, May 17, 2014 at 7:26 P...
   Author: Adrien Mogenet, 2014-05-18, 08:45
Re: Re: Java Client Write Data blocked - HBase - [mail # user]
...Nope, HTable#put(Put) is a single synchronous call.As JM said, use HTable#put(List) to send several Put operations toHBase.On Sun, May 4, 2014 at 4:19 AM, jingych  wrote:Adrien Mogeneth...
   Author: Adrien Mogenet, 2014-05-04, 10:48
Re: Questions on FuzzyRowFilter - HBase - [mail # user]
...Using 4 random bytes you'll get 2^32 possibilities; thus your data can besplit enough among all the possible regions, but you won't be able toeasily benefit from distributed scans to gather ...
   Author: Adrien Mogenet, 2014-05-03, 08:11
Re: testing co-processors - HBase - [mail # user]
...Hi,You can load your CP through the HBaseTesting utility and test it that way!-- Adrien MogenetFrom my mobile phoneOn 29 Jan 2014 07:25, "Sujee Maniyam"  wrote:> Hi all,>> I am...
   Author: Adrien Mogenet, 2014-01-29, 06:37
[expand - 2 more] - Re: Default value for Periodic Flusher - HBase - [mail # user]
...Yep, I obviously turned it off for my use case since MTTR is not a big concern. I just wanted to talk about the default value, not about my personal case especially. If you consider MTTR is ...
   Author: Adrien Mogenet, 2013-12-14, 17:26
Re: High Full GC count for Region server - HBase - [mail # user]
...The "responseTooSlow" message is triggered whenever a bunch of operations is taking more than a configured amount of time. In your case, processing 15827 elements can lead into long response...
   Author: Adrien Mogenet, 2013-10-31, 10:20
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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