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[expand - 1 more] - Re: backup namenode setting issue: namenode failed to start - Hadoop - [mail # user]
...You do not even need to copy manually. Say initially you have one active image in dfs.name.dir = dir1. And dir 2 is empty. You add dir2 to the the config: dfs.name.dir = dir1,dir2 HDFS will ...
   Author: Konstantin Shvachko, 2010-06-23, 22:40
[expand - 1 more] - Re: Any possible to set hdfs block size to a value smaller than 64MB? - Hadoop - [mail # user]
...Hi Brian,  Interesting observations. This is probably in line with the "client side mount table" approach, [soon to be] proposed in HDFS-1053. Another way to provide personalized view o...
   Author: Konstantin Shvachko, 2010-05-19, 22:11
Re: distcp of small number of really large files - Hadoop - [mail # user]
...There is a new feature called concat(), which concatenates files consisting of full blocks. So the ideas is to copy individual blocks in parallel, then concatenate them once they are copied ...
   Author: Konstantin Shvachko, 2010-05-18, 01:18
[expand - 1 more] - Re: TestFDSIO - Hadoop - [mail # user]
...On the second thought, there should not be any racing. You probably restart the hdfs cluster between the runs. When you shutdown the cluster after the first run some files may still remain u...
   Author: Konstantin Shvachko, 2010-05-15, 00:57
Re: [DISCUSSION]: Integrating SureLogic into Hadoop - Hadoop - [mail # dev]
...This is good news! I found SureLogic stack useful for finding bugs. It was especially helpful in detecting synchronization issues. Good that the licensing issues are cleared out. Thanks, Cos...
   Author: Konstantin Shvachko, 2010-05-14, 20:19
Re: Hadoop performance - xfs and ext4 - Hadoop - [mail # user]
... On 4/23/2010 6:17 AM, stephen mulcahy wrote:  Absolutely. +1  Thanks,  ...
   Author: Konstantin Shvachko, 2010-04-26, 17:46
Re: [VOTE] Avro as TLP? - Hadoop - [mail # general]
...+1   On 4/6/2010 1:15 PM, Doug Cutting wrote:...
   Author: Konstantin Shvachko, 2010-04-06, 22:44
[HADOOP-193] DFS i/o benchmark. - Hadoop - [issue]
...DFS i/o benchmark is a map-reduce based test that measures performance of the cluster for reads and writes.This is an evolved version of HADOOP-72, and HADOOP-95 test.This test writes into o...
http://issues.apache.org/jira/browse/HADOOP-193    Author: Konstantin Shvachko, 2010-04-01, 17:12
[expand - 1 more] - Re: [DISCUSSION] Release process - Hadoop - [mail # dev]
...On 3/31/2010 2:19 PM, Doug Cutting wrote:  > Konstantin Shvachko wrote:  >> I would like to propose a straightforward release of 0.21 from current  >> 0.21 bran...
   Author: Konstantin Shvachko, 2010-04-01, 01:29
Re: bin/hadoop namenode -format          IOException: Invalid argument - Hadoop - [mail # general]
...This may be a problem with the underlying local file system. Some file systems just don't support locks. Some NFS, e.g. Some may have buggy native java implementation.  Are your name-no...
   Author: Konstantin Shvachko, 2010-03-24, 18:13
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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