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Re: How to tell my Hadoop cluster to read data from an external server - Hadoop - [mail # user]
...The stack trace indicates the job client is trying to submit a job to the MR cluster and it is failing. Are you certain that at the time of submitting the job, the JobTracker is running ? (O...
   Author: Hemanth Yamijala, 2013-03-27, 05:13
Re: hadoop cluster not working - Hadoop - [mail # user]
...Have you configured your JobTracker's IPC port as 54311. Sharing your configuration may be helpful.  Thanks Hemanth   On Sun, Mar 10, 2013 at 11:56 AM, mallik arjun wrote:  ...
   Author: Hemanth Yamijala, 2013-03-10, 14:01
Re: How to add another file system in Hadoop - Hadoop - [mail # user]
...I may be guessing here a bit. Basically a filesystem is identified by the protocol part of the URI of a file - so a file on the S3 filesystem will have a URI like s3://... If you look at the...
   Author: Hemanth Yamijala, 2013-02-21, 12:49
Re: OutOfMemoryError during reduce shuffle - Hadoop - [mail # user]
...Hi,  I might be going slightly tangential here. Since you mention sorting - is this sorting the total input ? In that case, does HashPartitioner even work ? Because the partitions would...
   Author: Hemanth Yamijala, 2013-02-21, 12:43
Re: JUint test failing in HDFS when building Hadoop from source. - Hadoop - [mail # user]
...Hi,  In the past, some tests have been flaky. It would be good if you can search jira and see whether this is a known issue. Else, please file it, and if possible, provide a patch. :) &...
   Author: Hemanth Yamijala, 2013-02-20, 02:14
Re: Database insertion by HAdoop - Hadoop - [mail # user]
...What database is this ? Was hbase mentioned ?  On Monday, February 18, 2013, Mohammad Tariq wrote:  ...
   Author: Hemanth Yamijala, 2013-02-18, 14:58
Re: Where do/should .jar files live? - Hadoop - [mail # user]
...On top of what Bejoy said, just wanted to add that when you submit a job to Hadoop using the hadoop jar command, the jars which you reference in the command on the edge/client node will be p...
   Author: Hemanth Yamijala, 2013-01-23, 04:39
Re: passing arguments to hadoop job - Hadoop - [mail # user]
...OK. The easiest way I can think of for debugging this is to add a System.out.println in your Reduce.configure code. The output will come in the logs specific to your reduce tasks. You can ac...
   Author: Hemanth Yamijala, 2013-01-22, 07:58
Re: FileSystem.workingDir vs mapred.local.dir - Hadoop - [mail # user]
...Hi,  AFAIK, the mapred.local.dir property refers to a set of directories under which different types of data related to mapreduce jobs are stored - for e.g. intermediate data, localized...
   Author: Hemanth Yamijala, 2013-01-15, 17:43
Re: Compile error using contrib.utils.join package with new mapreduce API - Hadoop - [mail # user]
...On the dev mailing list, Harsh pointed out that there is another join related package: http://svn.apache.org/repos/asf/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/ha...
   Author: Hemanth Yamijala, 2013-01-15, 17:29
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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