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Re: only one reducer running in a hadoop cluster - Hadoop - [mail # user]
...Nick Cen wrote: what is the configuration of mapred.tasktracker.reduce.tasks.maximum ?   -Amareshwari...
   Author: Amareshwari Sriramadasu, 2009-02-09, 07:47
Re: Task tracker archive contains too many files - Hadoop - [mail # user]
...Andrew wrote: Now, there is no way to stop DistributedCache from stopping unpacking of  jars. I think it should have an option (thru configuration) whether to  unpack or not. Can y...
   Author: Amareshwari Sriramadasu, 2009-02-04, 11:25
Re: Hadoop Streaming Semantics - Hadoop - [mail # user]
...S D wrote: LineRecordReader reads "line" as VALUE and the KEY is offset in the file. Looks like your directories are getting named with KEY. But I don't  see  any reason for that, ...
   Author: Amareshwari Sriramadasu, 2009-02-03, 03:38
Re: [ANNOUNCE] Hadoop release 0.18.3 available - Hadoop - [mail # user]
...Anum Ali wrote: Download a stable release from http://hadoop.apache.org/core/releases.html For installation and setup, You can see  http://hadoop.apache.org/core/docs/current/quickstart...
   Author: Amareshwari Sriramadasu, 2009-01-30, 08:22
Re: Counters in Hadoop - Hadoop - [mail # user]
...Kris Jirapinyo wrote: Counters are available in JobHistory, but yes they are not shown on the  web ui. There is an open jira for the same:  https://issues.apache.org/jira/browse/HA...
   Author: Amareshwari Sriramadasu, 2009-01-30, 03:54
Re: Interrupting JobClient.runJob - Hadoop - [mail # user]
...Edwin wrote: Yes. there is noway to stop the client from polling. If you want to Stop client thread, use +c or kill the client  process itself.  You can kill a job using the comman...
   Author: Amareshwari Sriramadasu, 2009-01-27, 09:39
Re: Debugging in Hadoop - Hadoop - [mail # user]
...patektek wrote: LOG.info statements in MapTask will be shown in syslog in task logs.   The directory is ${hadoop.log.dir}/userlogs/. The same can be browsed on the web ui of the task. &...
   Author: Amareshwari Sriramadasu, 2009-01-27, 04:20
Re: NLineInputFormat and very high number of maptasks - Hadoop - [mail # user]
...Saptarshi Guha wrote: You are right. NLineInputFormat splits N lines of input as one split and  each split is given to a map task. By default, N is 1. N can configured through the prope...
   Author: Amareshwari Sriramadasu, 2009-01-21, 03:41
Re: How to debug a MapReduce application - Hadoop - [mail # user]
...From the exception you pasted, it looks like your io.serializations did  not set the SerializationFactory properly. Do you see any logs on your  console for adding serialization cl...
   Author: Amareshwari Sriramadasu, 2009-01-19, 04:05
Re: Calling a mapreduce job from inside another - Hadoop - [mail # user]
...You can use Job Control. See http://hadoop.apache.org/core/docs/r0.19.0/mapred_tutorial.html#Job+Control http://hadoop.apache.org/core/docs/r0.19.0/api/org/apache/hadoop/mapred/jobcontrol/Jo...
   Author: Amareshwari Sriramadasu, 2009-01-19, 03:59
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