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Re: Wordcount Hadoop pipes C++ Running issue - MapReduce - [mail # user]
...Hello,  Do you have a proper MR cluster configured? Does your hadoop-1.2.1/bin/conf/mapred-site.xml point mapred.job.tracker to a specific hostname and port, and a JT+TT is running? &nb...
   Author: Harsh J, 2014-01-10, 02:17
Re: Block size - MapReduce - [mail # user]
...XG,  The newer default is 128 MB [HDFS-4053]. The minimum, however, can be as low as io.bytes.per.checksum (default: 512 bytes) if the user so wishes it. To administratively set a limit...
   Author: Harsh J, 2014-01-04, 07:23
Re: Reduce task hang[EMERGENCE] - MapReduce - [mail # user]
...Hi again,  I did not mention the TaskTracker log, but the actual Task JVM's syslog/stderr/stdout. Do those log *any* problems at all?  On Fri, Jan 3, 2014 at 11:16 AM, Azuryy Yu &n...
   Author: Harsh J, 2014-01-03, 05:59
[MAPREDUCE-5492] Suppress expected log output stated on MAPREDUCE-5 - MapReduce - [issue]
...Jetty in MR1 may produce an expected EOFException during its operation that we shouldn't log out in ERROR form.This shouldn't affect MR2, however, as it uses Netty.See MAPREDUCE-5 (Jothi's c...
http://issues.apache.org/jira/browse/MAPREDUCE-5492    Author: Harsh J, 2014-01-03, 04:19
Re: Job fails while re attempting the task in multiple outputs case - MapReduce - [mail # user]
...Are you using the MultipleOutputs class shipped with Apache Hadoop or one of your own?  If its the latter, please take a look at gotchas to take care of described at http://wiki.apache....
   Author: Harsh J, 2013-12-30, 14:12
Re: conf.set() and conf.get() - MapReduce - [mail # user]
...If you can store your object in a string format, you should be able to use Configuration to do so, and I would advise using serialised files via DistributedCache if it is larger in size, suc...
   Author: Harsh J, 2013-12-30, 05:46
Re: issue about corrupt block test - MapReduce - [mail # user]
...Your find expression includes the genstamp, try it without the genstamp:  find /data -name 'blk_-5451264646515882190*'  On Wed, Dec 11, 2013 at 2:46 PM, ch huang  wrote:  ...
   Author: Harsh J, 2013-12-11, 09:36
Re: about hadoop-2.2.0 "mapred.child.java.opts" - MapReduce - [mail # user]
...Actually, its the other way around (thanks Sandy for catching this error in my post). The presence of mapreduce.map|reduce.java.opts overrides mapred.child.java.opts, not the other way round...
   Author: Harsh J, 2013-12-04, 08:20
Re: How can I see the history log of non-mapreduce job in yarn - MapReduce - [mail # user]
...Are you talking of the new Application History Server (which is generic) or the Job History Server (which is part of the MR project and only tracks/shows MR jobs)?  On Tue, Nov 26, 2013...
   Author: Harsh J, 2013-11-26, 10:16
[expand - 1 more] - Re: Hadoop on multiple user mode? - MapReduce - [mail # user]
...Hi,  In MR2 over YARN, you'll need to configure the LinuxContainerExecutor instead.   On Tue, Nov 12, 2013 at 2:11 PM, rab ra  wrote:    Harsh J...
   Author: Harsh J, 2013-11-12, 09:45
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