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RE: How do I remove "Non DFS Used"? - Hadoop - [mail # user]
...Non DFS used tends to be logging or some other information on the disk.  So you can't use hadoop commands to remove the files from the disk.    s. giga     &n...
   Author: Michael Segel, 2010-07-07, 13:48
RE: Why single thread for HDFS? - Hadoop - [mail # general]
... If all you want to do is to have a faster -cp option, then if you know yo ur intial block list and location, you need to generate the target bloc l ist and then create a single thread ...
   Author: Michael Segel, 2010-07-06, 14:10
RE: problem with rack-awareness - Hadoop - [mail # user]
...A couple of things...  Does your script have a default rack defined? So if it can't find your mach ine, you default to it being on rack_default ? (You could use rack0, but then you have...
   Author: Michael Segel, 2010-07-02, 14:51
RE: What are uses of taskTracker and JobTracker services? - Hadoop - [mail # general]
...I think that he was trying to explain that in HDFS, you have a name node  and then your data nodes. So you have the name node service on the name node and each data node has a  dat...
   Author: Michael Segel, 2010-06-29, 19:49
RE: The IBM Distribution of Apache Hadoop now available - Hadoop - [mail # general]
...  6 SR   My question is why 32-bit? Why not 64?      at   Considering that there are no posts in the fourm and I posted the first...   I guess today is a t...
   Author: Michael Segel, 2010-06-28, 15:57
RE: DNS.reverseDns() fallback - Hadoop - [mail # user]
...  [SNIP] he cloud shouldn't be getting a lot of external traffic except on the name  node/job tracker nodes which could be multi-homed.  Eric, I don't disagree that it is usef...
   Author: Michael Segel, 2010-05-28, 17:46
Chaining jobs that have dependencies on jars... - Hadoop - [mail # user]
... We have a series of hadoop map/reduce jobs that need to be run.  In between each job, we have to do some logic and depending on the result s the next job gets called.  So in ...
   Author: Michael Segel, 2010-05-14, 21:32
RE: Hadoop support for hbase - Hadoop - [mail # general]
...    Sometimes you have to slow down to go faster.         _________________________________________________________________ Hotmail is redefining busy wi...
   Author: Michael Segel, 2010-05-10, 20:21
Silly question about 'rack aware'... - Hadoop - [mail # user]
...Ok,   I should know this... but just to be safe...  When setting up the rack aware script, will the input to the script alway s be the machine's IP address, or will it be the actua...
   Author: Michael Segel, 2010-05-07, 16:40
RE: hanging task - Hadoop - [mail # user]
...There's a couple of things...  1) Inside the map() method, if you're taking longer than the timeout, y ou will fail. 2) You could also fail if you run in to GC problems that cause timeo...
   Author: Michael Segel, 2010-05-07, 16:35
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