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Re: Altering logical rack configuration - HDFS - [mail # user]
...On Feb 4, 2011, at 5:00 PM, Jonathan Disher wrote:  no longer here) did not specify logical racks in the HDFS configuration, in stead leaving everything in "default-rack".  Now I h...
   Author: Allen Wittenauer, 2011-02-08, 18:47
[expand - 1 more] - Re: changing the block size - HDFS - [mail # user]
...On Feb 6, 2011, at 2:24 PM, Rita wrote: ead   Right.   As previously mentioned, changing the block size does not change the block s of the previously written files.  In other...
   Author: Allen Wittenauer, 2011-02-08, 00:16
Re: help:2 problems in using hadoop sequencefile - HDFS - [mail # dev]
...On Jan 18, 2011, at 6:15 PM, 张春玮 wrote:   There is no working append code in any released version of Apache Hadoop 0.20.2.  So you'll need to read all the files with an identity ma...
   Author: Allen Wittenauer, 2011-02-04, 02:20
Re: Use VIP for DataNodes - HDFS - [mail # dev]
...FWIW, Y! and LI (and I'm sure others) have been using failover A records f or years.  The only known problem/limitation is exactly what Dhruba states.  On Jan 29, 2011, at 11:19 PM...
   Author: Allen Wittenauer, 2011-01-31, 20:22
[expand - 1 more] - Re: TestDFSIO on Lustre vs HDFS - HDFS - [mail # user]
...On Jan 28, 2011, at 10:39 AM, Nathan Rutman wrote: ntity, the reliability, scalabilty, heterogenicity (sic), data access patte rn, applications you're using, performance requirements, and sy...
   Author: Allen Wittenauer, 2011-01-29, 06:35
Re: rsync + hdfs - HDFS - [mail # user]
...On Jan 11, 2011, at 6:32 PM, Mag Gam wrote:    distcp is the closest....
   Author: Allen Wittenauer, 2011-01-12, 19:58
Re: Unbalanced disks - need to take down whole HDFS? - HDFS - [mail # user]
...On Dec 16, 2010, at 6:32 AM, Erik Forsberg wrote: u_balance_the_blocks_on_the_disk.3F   It won't mess up the namenode, but it is going to be busy replicating thos e blocks on that datan...
   Author: Allen Wittenauer, 2010-12-16, 19:33
Re: Topology script - does it take DNS names, or IPs, or both? - HDFS - [mail # user]
...On Dec 2, 2010, at 11:41 PM, Erik Forsberg wrote:   You should make it work with both....
   Author: Allen Wittenauer, 2010-12-03, 20:48
Re: Locating replicant nodes for blocks of a file - HDFS - [mail # user]
...On Oct 12, 2010, at 4:00 PM, Adam Phelps wrote:  ed, preferably from the command line?  I'm looking to perform some node fai lure tests causing specific files to become inaccessibl...
   Author: Allen Wittenauer, 2010-10-14, 21:01
Re: Out of space preventing namenode startup - HDFS - [mail # user]
...Given this is the third time this has come up in the past two days, I guess  we need a new FAQ entry or three.  We also clearly need to update the quickstart that says:  a) Do...
   Author: Allen Wittenauer, 2010-10-06, 21:04
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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