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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
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
Re: Path exception when running from inside IDE. - MapReduce - [mail # user]
...Your job configuration isn't picking up or passing the right default filesystem (fs.default.name or fs.defaultFS) before submitting the job. As a result, the non-configured default of local ...
   Author: Harsh J, 2013-11-02, 09:20
Re: Why is my output directory owned by yarn? - MapReduce - [mail # user]
...The DefaultContainerExecutor isn't the one that can do setuid. The LinuxContainerExecutor can do that.  On Fri, Nov 1, 2013 at 8:00 PM, Bill Sparks  wrote:    Harsh J...
   Author: Harsh J, 2013-11-02, 00:22
Re: can flume use hadoop HA? - MapReduce - [mail # user]
...Any and all HDFS clients can use HA and flume is no different.  On Wed, Oct 30, 2013 at 7:31 AM, ch huang  wrote:    Harsh J...
   Author: Harsh J, 2013-10-31, 11:12
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB