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Re: region server of -ROOT- table is dead, but not reassigned - HBase - [mail # user]
...This may point to ZK data problem. Did you try to restart dead servers?  Thank you!  Sincerely, Leonid Fedotov Technical Support Engineer      On Feb 19, 2013, at 9:...
   Author: Leonid Fedotov, 2013-02-20, 18:29
Re: Adding hbase nodes on the fly - HBase - [mail # user]
...Load all the needed binaries to the new server, copy configuration from the existing one and start the new one. Master will pick it up and start to use.  Thank you!  Sincerely, Leo...
   Author: Leonid Fedotov, 2013-01-11, 17:03
Re: HDFS disk space requirements - HBase - [mail # user]
...What is the reason to have replication factor set to 5? change it to 3 and you will save 30% of the space. Also, you can load your JSON data to separate folder with replication set to 1, as ...
   Author: Leonid Fedotov, 2013-01-11, 17:02
Re: Where to place logs - HBase - [mail # user]
...Varun, this really depends on your log rotation and retention policy. Logs usually pretty big, but if you rotate it once a day(for example) and remove old logs after, say, 1 week, you probab...
   Author: Leonid Fedotov, 2012-12-28, 17:22
Re: 答复: how config multi regionserver, or what is wrong? - HBase - [mail # user]
...Your nodes are too much out of sync with time. You need to set up time synchronization service for your cluster.  Thank you!  Sincerely, Leonid Fedotov Hortonworks support team &nb...
   Author: Leonid Fedotov, 2012-12-11, 07:28
Re: Reg:delete performance on HBase table - HBase - [mail # user]
...do you want to delete just subset of the rows, or delete whole table? if whole, then use "drop" it should be almost instant. Same as in oracle, you can do "delete * from table;" and it may t...
   Author: Leonid Fedotov, 2012-12-05, 17:03
Re: How to Split the hbase table or region - HBase - [mail # user]
...Why not to use HBase UI? connect to it, go to the table page and click "Split" button…  Thank you!  Sincerely, Leonid Fedotov  On Nov 15, 2012, at 5:26 AM, msmdhussain wrote: ...
   Author: Leonid Fedotov, 2012-11-15, 18:25
Re: Region is not online: .META.,,1 - HBase - [mail # user]
...The first to try is   hbase hbck -repair  Check here: http://hbase.apache.org/book/apbs04.html#d2067e11173  Thank you!  Sincerely, Leonid Fedotov   On Nov 6, 2012, a...
   Author: Leonid Fedotov, 2012-11-07, 15:43
Re: HBase scan performance decreases over time. - HBase - [mail # user]
...There is property dfs.balance.bandwidthPerSec in hdfs-site.xml         dfs.balance.bandwidthPerSec     6250000              S...
   Author: Leonid Fedotov, 2012-11-05, 18:52
Re: how to work Htable connection - HBase - [mail # user]
...Hi!  As documentation stated: HTable instances are not thread-safe. When creating HTable instances, it is advisable to use the same HBaseConfiguration instance. This will ensure sharing...
   Author: Leonid Fedotov, 2012-11-05, 17:44
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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