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Re: how to stop datanode - HBase - [mail # user]
...Two ways:  1. To close all DNs, use hadoop-daemons.sh (notice the plural). Doing hadoop-daemons.sh stop datanode will stop all datanodes listed in slaves file. 2. To close an individual...
   Author: Harsh J, 2012-05-17, 02:02
Re: hbase security - HBase - [mail # user]
...HBase 0.92 has table-level security (among other goodies). Check out this slide on what all it includes: http://www.slideshare.net/ghelmling/new-hbase-features-coprocessors-and-security &nbs...
   Author: Harsh J, 2012-05-15, 09:24
[expand - 1 more] - Re: Important "Undefined Error" - HBase - [mail # user]
...Dalia,  Is your NameNode running fine? The issue is that HBase Master has been asked to talk to HDFS, but it can't connect to the HDFS NameNode. Does "hadoop dfs -touchz foobar" pass or...
   Author: Harsh J, 2012-05-12, 12:57
[expand - 1 more] - Re: How to run two data nodes on one pc? - HBase - [mail # user]
...Waled,  Since its the same machine, using "localhost" (which refers automatically to 127.0.0.1) and those explicit port numbers should be fine to use.  For the DN startup, see my l...
   Author: Harsh J, 2012-05-11, 03:13
[expand - 1 more] - Re: Switching existing table to Snappy possible? - HBase - [mail # user]
...Jeff,  Are you looking for "hbase.online.schema.update.enable"? Its still considered experimental (though I dunno its current state on trunk) to update schemas "on-line" currently. &nbs...
   Author: Harsh J, 2012-05-10, 16:11
Re: Looking for a single row - HTable.get(Get) or Scan(Get) - HBase - [mail # user]
...Bryan,  Yes, that is true. Essentially Scan.isGetScan() [0] needs to pass before bloom filter checks proceed. And that method passes for single row scans as expected.  Multi-gets s...
   Author: Harsh J, 2012-05-10, 14:35
[expand - 1 more] - Re: HRegionPartitioner breaks my configuration - HBase - [mail # user]
...Christoph,  I still don't get your issue though. A stack trace of the error thrown out by the components you used would be good to have :)  On Thu, May 10, 2012 at 3:38 PM, Christo...
   Author: Harsh J, 2012-05-10, 10:42
Re: terrible! I can't drop the table - HBase - [mail # user]
...The drop is what you ought to have done first, before removing the FS folder and the meta entries. It does all those actions for you. Why did you do it this way?  Do you see the table s...
   Author: Harsh J, 2012-05-07, 13:18
[HBASE-5863] Improve the graceful_stop.sh CLI help (especially about reloads) - HBase - [issue]
...Right now, graceful_stop.sh prints:Usage: graceful_stop.sh [--config <conf-dir>] [--restart] [--reload] [--thrift] [--rest] <hostname> thrift      If we shoul...
http://issues.apache.org/jira/browse/HBASE-5863    Author: Harsh J, 2012-05-05, 02:28
Re: Hbase - HBase - [mail # user]
...Hey Wen,  First off, use the right Hadoop for HBase: http://hbase.apache.org/book.html#hadoop - 0.20.203 isn't a version that would work properly with HBase.  Regarding your troubl...
   Author: Harsh J, 2012-04-30, 07:19
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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