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[expand - 2 more] - Re: Integrating Lustre and HDFS - HDFS - [mail # dev]
... No, i'm saying your mapreduce code needs to explicitly reference every file  system that it needs to access.  You can't rely upon fs.default.name*.  Th e distcp code cou...
   Author: Allen Wittenauer, 2010-06-15, 17:24
Re: How to fix a corrupted disk? - HDFS - [mail # user]
...On Jun 9, 2010, at 10:13 PM, Sean Bigdatafun wrote:  nterested is stored on 3 datanodes A, B, C. And A suddenly crashed, I under stand I can still read my file because I have two copies...
   Author: Allen Wittenauer, 2010-06-10, 14:04
Re: Lots of Different Kind of Datanode Errors - HDFS - [mail # user]
...On Jun 4, 2010, at 12:03 PM, Todd Lipcon wrote:  icated xceivers was set to 2048 instead of 4096. g. Verify that your machines aren't swapping when you're under load.  Or doing any...
   Author: Allen Wittenauer, 2010-06-04, 19:19
Re: HDFS-Fuse/virtual machine images - HDFS - [mail # user]
...On May 11, 2010, at 7:42 AM, Bastian Lorenz wrote:  I expect performance to be similar to that of glaciers moving across a cont inent.  Last I heard, FUSE-HDFS was a 60% performanc...
   Author: Allen Wittenauer, 2010-05-11, 15:14
Re: fuse-dfs again - HDFS - [mail # user]
...On May 6, 2010, at 6:31 PM, Yudong Liu wrote: rage users. Looks like  Be aware that HDFS does very poorly with small files.  It should not be tre ated like "regular storage".  ...
   Author: Allen Wittenauer, 2010-05-07, 15:14
Re: Fuse-DFS - HDFS - [mail # user]
...On May 5, 2010, at 5:37 AM, Seraph Imalia wrote: ocal: not found omake: not found oconf: not found onfigure: not found  It is kind of disappointing that the fuse code requires the gnu d...
   Author: Allen Wittenauer, 2010-05-05, 15:34
Re: Cant get HDFS to load more than 1Gig total data - HDFS - [mail # user]
...  On 1/7/10 8:34 AM, "Scott"  wrote:  This almost always means your HDFS is in safemode and/or has no live datanodes.   How is the namenode heap?  Are you out of phy...
   Author: Allen Wittenauer, 2010-01-07, 16:49
Re: Description of HDFS metrics - HDFS - [mail # dev]
...How do we see it?    On 11/30/09 4:56 PM, "Suresh Srinivas"  wrote:  ...
   Author: Allen Wittenauer, 2009-12-01, 01:02
Re: HDFS questions - HDFS - [mail # user]
...On 11/19/09 5:44 PM, "[EMAIL PROTECTED]"  wrote:  It is a user-space file system, however, the user that is running the NameNode process is considered 'root' not the UNIX level roo...
   Author: Allen Wittenauer, 2009-11-20, 18:39
[expand - 3 more] - Re: Security error running hadoop with MaxTemperature example - HDFS - [mail # user]
...  On 10/13/09 10:23 PM, "David Greer"  wrote:   So /tmp in the HDFS is not world writable.  hadoop dfs -chmod a+w /tmp should make it world writable and then your stuff s...
   Author: Allen Wittenauer, 2009-10-14, 15:22
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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