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Re: Delivery Status Notification (Failure) - Hadoop - [mail # user]
...Arun  I don't understand your reply!  Had you redirected this person to the hive mailing list I would have understood..  My philosophy any mailing list  has always been ; If I know...
   Author: Raj Vishwanathan, 2013-02-13, 04:45
Re: Map tasks processing some files multiple times - Hadoop - [mail # user]
...Could it be due to spec-ex? Does it make a diffrerence in the end?  Raj    ...
   Author: Raj Vishwanathan, 2012-12-06, 06:45
Re: File block size use - Hadoop - [mail # user]
...I haven't tried it but this should also work   hadoop  fs  -Ddfs. block.size= -cp  src dest   Raj    ___________________________  ber 2, 2012 7:17 AM ou. I will try ...
   Author: Raj Vishwanathan, 2012-10-02, 14:52
Re: Measuring Shuffle time for MR job - Hadoop - [mail # user]
...You can extract the shuffle time from the job log.  Take a look at    https://github.com/rajvish/hadoop-summary    Raj     mail.com>  2012 12:57 AM uffle tim...
   Author: Raj Vishwanathan, 2012-08-27, 13:54
[expand - 1 more] - Re: doubt about reduce tasks and block writes - Hadoop - [mail # user]
...Harsh  I did leave an escape route open witth a bit about "corner cases " :-)   Anyway I agree that HDFS has no notion of block 0. I just mea nt that had the dfs.replication is 1, ...
   Author: Raj Vishwanathan, 2012-08-26, 17:13
Re: Number of Maps running more than expected - Hadoop - [mail # user]
...You probably have speculative execution on. Extra maps and reduce tasks are r un in case some of them fail  Raj   Sent from my iPad Please excuse the typos.   On Aug 16, 2012,...
   Author: Raj Vishwanathan, 2012-08-17, 03:02
Re: Multinode cluster only recognizes 1 node - Hadoop - [mail # user]
...Sean   Can you paste the name node and jobtracker logs.  It could  be something as simple as disabling the firewall.  Raj    _____________________________ .com&...
   Author: Raj Vishwanathan, 2012-08-01, 15:16
Re: Merge Reducers Output - Hadoop - [mail # user]
...Is there a requirement for the final reduce file to be sorted? If not, woul dn't a map only job ( +  a combiner, ) and a merge only job provide the a nswer?  Raj    ael Segel ...
   Author: Raj Vishwanathan, 2012-07-31, 15:10
Re: Datanode error - Hadoop - [mail # user]
...Could also be due to network issues. Number of sockets could be less or num ber of threads could be less.  Raj    ________ pache.org  error  they wish to read a &nbs...
   Author: Raj Vishwanathan, 2012-07-20, 17:37
Re: Error: Too Many Fetch Failures - Hadoop - [mail # user]
... You are probably having a very low somaxconn parameter ( default cent os has it at 128 , if I remember correctly). You can check the value under  /proc/sys/net/core/somaxconn &nbs...
   Author: Raj Vishwanathan, 2012-06-20, 00:42
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