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[expand - 1 more] - Re: datanode tuning - Hadoop - [mail # user]
...Rita!  14-16 Tb is perhaps a big node. Even then the scalability limits of the Namenode in your case would depend on how many files (more accurately how many blocks) there are on HDFS. ...
   Author: Ravi Prakash, 2013-10-07, 14:50
Re: IP based hadoop cluster - Hadoop - [mail # user]
...Is security on? I'm not entirely sure (and I think it might be illuminating to the rest of us when you work this out, so please email back when you do), but I am guessing that a code change ...
   Author: Ravi Prakash, 2013-10-01, 22:18
Re: Is there any way to partially process HDFS edits? - Hadoop - [mail # user]
...Tom! I would guess that just giving the NN JVM lots of memory (64Gb / 96Gb) should be the easiest way.     ________________________________  From: Tom Brown  To: "[EMAIL ...
   Author: Ravi Prakash, 2013-09-25, 19:53
[HADOOP-7985] maven build should be super fast when there are no changes - Hadoop - [issue]
...I use this command "mvn -Pdist -P-cbuild -Dmaven.javadoc.skip -DskipTests install" to build. Without ANY changes in code, running this command takes 1:32. It seems to me this is too long. In...
http://issues.apache.org/jira/browse/HADOOP-7985    Author: Ravi Prakash, 2013-08-15, 20:02
[HADOOP-9614] smart-test-patch.sh hangs for new version of patch (2.7.1) - Hadoop - [issue]
...patch -p0 -E --dry-run prints "checking file " for the new version of patch(2.7.1) rather than "patching file" as it did for older versions. This causes TMP2 to become empty, which causes th...
http://issues.apache.org/jira/browse/HADOOP-9614    Author: Ravi Prakash, 2013-06-05, 00:14
Re: Default permissions for Hadoop output files - Hadoop - [mail # user]
...Hi Steve,  You can use fs.permissions.umask-modeto set the appropriate umask     ________________________________  From: Steve Lewis  To: common-user   Sent: Mo...
   Author: Ravi Prakash, 2013-05-20, 17:48
Re: Unexpected Hadoop behavior: map task re-running after reducer has been running - Hadoop - [mail # user]
...This is not unexpected behavior. If there are fetch failures on the Reduce (i.e. its not able to get the map outputs) then a map may be rerun.     ________________________________ ...
   Author: Ravi Prakash, 2013-03-11, 17:00
Re: Job History files in Hadoop 2.0 - Hadoop - [mail # user]
...Hi Amit,  The job history files are stored in HDFS. eg. /mapred/history/done/2013/02/06/000000  I would think that there would be some changes in the format.   Thanks Ravi &nb...
   Author: Ravi Prakash, 2013-02-06, 21:06
[expand - 1 more] - Re: measuring iops - Hadoop - [mail # user]
...Do you mean in a cluster being used by users, or as a benchmark to measure  the maximum?  The JMX page /jmx provides some interesting stat s, but I'm not sure they have what you wa...
   Author: Ravi Prakash, 2012-10-23, 12:47
[expand - 1 more] - Re: Hadoop Source Code - Hadoop - [mail # dev]
...Running "ant eclipse" should produce the eclipse project files you need to  import it into eclipse      ________________________________  ¬†From: Samaneh Shokuhi &nbs...
   Author: Ravi Prakash, 2012-10-22, 14:22
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