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Re: simple tutorial or procedure for configuring HDFS FEDERATION 0.23.3 in a cluster - MapReduce - [mail # user]
...A simple search ought to have found this for you.        http tml     ________________________________  From: Visioner Sadak   To: [EMAIL PROTECTED]  Sent:...
   Author: Ravi Prakash, 2012-10-28, 01:51
Re: Getting the configuration object for a MapReduce job from the DataNode - MapReduce - [mail # user]
...Hi Adrian,  Please use [EMAIL PROTECTED] for user-related questions  Which version of Hadoop are you using? Where do you want the object? In a map/reduce task? For the currently ex...
   Author: Ravi Prakash, 2012-10-22, 06:00
[MAPREDUCE-4721] Task startup time in JHS is same as job startup time. - MapReduce - [issue]
...As Bobby pointed out in https://issues.apache.org/jira/browse/MAPREDUCE-4711?focusedCommentId=13471696&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13471...
http://issues.apache.org/jira/browse/MAPREDUCE-4721    Author: Ravi Prakash, 2012-10-18, 14:21
Re: Using a hard drive instead of - MapReduce - [mail # user]
...Maybe at a slight tangent, but for each write operation on HDFS (e.g. create a file, delete a file, create a directory), the NN waits until the edit has been *flushed* to disk. So I can imag...
   Author: Ravi Prakash, 2012-10-13, 03:46
[MAPREDUCE-4645] Providing a random seed to Slive should make the sequence of filenames completely deterministic - MapReduce - [issue]
...Using the -random seed option still doesn't produce a deterministic sequence of filenames. Hence there's no way to replicate the performance test. If I'm providing a seed, its obvious that I...
http://issues.apache.org/jira/browse/MAPREDUCE-4645    Author: Ravi Prakash, 2012-09-25, 16:08
[MAPREDUCE-4604] In mapred-default, mapreduce.map.maxattempts & mapreduce.reduce.maxattempts defaults are set to 4 as well as mapreduce.job.maxtaskfailures.per.tracker. - MapReduce - [issue]
...This causes the AM to fail the job at the same time as it blacklists a node, thus never actually trying another node.Marking as critical because we need this in 0.23.3 before it releases....
http://issues.apache.org/jira/browse/MAPREDUCE-4604    Author: Ravi Prakash, 2012-09-01, 15:00
[MAPREDUCE-4606] TestMRJobs and TestUberAM fail if /mapred/history are not present - MapReduce - [issue]
...This might be related to the test framework rather than those tests themselves. To make them pass, I had to create /mapred/history....
http://issues.apache.org/jira/browse/MAPREDUCE-4606    Author: Ravi Prakash, 2012-08-29, 20:40
[MAPREDUCE-4297] Usersmap file in gridmix should not fail on empty lines - MapReduce - [issue]
...An empty line (e.g. at the end of the file) in the usersmap file will cause gridmix to fail. Empty lines should be silently ignored....
http://issues.apache.org/jira/browse/MAPREDUCE-4297    Author: Ravi Prakash, 2012-06-01, 14:04
[MAPREDUCE-4134] Remove references of mapred.child.ulimit etc. since they are not being used any more - MapReduce - [issue]
...Courtesy Philip Su, we found that (mapred.child.ulimit, mapreduce.map.ulimit, mapreduce.reduce.ulimit) were not being used at all. The configuration exists but is never used. Its also mentio...
http://issues.apache.org/jira/browse/MAPREDUCE-4134    Author: Ravi Prakash, 2012-05-23, 20:28
[MAPREDUCE-4197] Include the hsqldb jar in the hadoop-mapreduce tar file - MapReduce - [issue]
...Courtesy BrahmaIn the previuos hadoop releases(20.XX) hsqldb was provided.But in hadoop-2.0.0 it is not present.Is it intentionally deleted or missing?...
http://issues.apache.org/jira/browse/MAPREDUCE-4197    Author: Ravi Prakash, 2012-05-18, 14:04
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