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RE: HDFS interfaces - Hadoop - [mail # user]
...Mahmood,  It is the in the FileSystem interface. http://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileSystem.html#getFileBlockLocations(org.apache.hadoop.fs.Path, long, lo...
   Author: John Lilley, 2013-06-03, 22:58
RE: How to start developing! - Hadoop - [mail # user]
...I had asked a similar question recently:  First, follow the instructions in BUILDING.txt.  It is a bit tedious, but if you are careful and get all of the exact versions of everythi...
   Author: John Lilley, 2013-06-03, 16:59
RE: What else can be built on top of YARN. - Hadoop - [mail # user]
...Rahul,  This is a very good question, and one we are grappling with currently in our application port.  I think there are a lot of legacy data-processing applications like ours whi...
   Author: John Lilley, 2013-06-01, 14:02
RE: OpenJDK? - Hadoop - [mail # user]
...Great, that's what I've done.  At least I think so.  This is JRE6 right?  # java -version java version "1.6.0_43" Java(TM) SE Runtime Environment (build 1.6.0_43-b01) Java Hot...
   Author: John Lilley, 2013-05-29, 16:53
[expand - 1 more] - RE: Shuffle phase replication factor - Hadoop - [mail # user]
...Ling, Thanks for the response!  I could use more clarification on item 1.  Specifically  *         mapred.reduce.parallel.copies  limits the number of...
   Author: John Lilley, 2013-05-23, 17:22
YARN in 2.0 and 0.23 - Hadoop - [mail # user]
...We intend to use the YARN APIs fairly soon.  Are there notable differences in YARNs classes, interfaces or semantics between 0.23 and 2.0?  It seems to be supported on both version...
   Author: John Lilley, 2013-05-22, 14:38
Is FileSystem thread-safe? - Hadoop - [mail # user]
...In other words, given an instance of org.apache.hadoop.fs.FileSystem, can multiple threads access it simultaneously?  I am assuming no since it is not synchronized.  Thanks, John L...
   Author: John Lilley, 2013-03-31, 08:45
RE: Hadoop execution sequence - Hadoop - [mail # user]
...I think it will help for Ouch to clarify what is meant by "in order".  If one JSON file must be completely processed before the next file starts, there is not much point to using MapRed...
   Author: John Lilley, 2013-01-15, 14:56
Getting started recommendations - Hadoop - [mail # user]
...We are somewhat new to Hadoop and are looking to run some experiments with HDFS, Pig, and HBase. With that in mind, I have a few questions: What is the easiest (preferably free) Hadoop distr...
   Author: John Lilley, 2013-01-11, 10:29
[expand - 1 more] - RE: Hello and request some advice. - Hadoop - [mail # user]
...I personally find Windows easier to use, however it is not a supported Hadoop production environment, and I *think* you have to use Cygwin under Windows even for development. Given that, if ...
   Author: John Lilley, 2013-01-04, 19:27
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