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Re: io.sort.factor - Hadoop - [mail # user]
...Hi Bharat,  I am looking at these logs - 2013-01-22 07:35:42,923 INFO org.apache.hadoop.mapred.MapTask: Finished spill 2  The number at the end of string does not go beyond 6. So I...
   Author: Ajay Srivastava, 2013-01-23, 07:16
Query about Speculative Execution - Hadoop - [mail # user]
...Hi,  What is the behavior of jobTracker if speculative execution is off and a task on data node is running extremely slow? Will the jobTracker simply wait till the slow running task fin...
   Author: Ajay Srivastava, 2012-12-06, 14:57
Too many fetch-failures - Hadoop - [mail # user]
...Hi,  I am getting following errors -  12/12/03 17:11:42 INFO mapred.JobClient: Task Id : attempt_201212031650_0001_m_000011_0, Status : FAILED Too many fetch-failures attempt_20121...
   Author: Ajay Srivastava, 2012-12-03, 17:21
Re: How to split a sequence file - Hadoop - [mail # user]
...Hi Jason, I am wondering about use case of distributing records on the basis of key t o mapper. If possible, could you please share your scenario ? Is it map only job ? Why not distribute re...
   Author: Ajay Srivastava, 2012-09-12, 05:35
Re: Non utf-8 chars in input - Hadoop - [mail # user]
...Rekha,  I guess that problem is that Text class uses utf-8 encoding and one can not  set other encoding for this class. I have not seen any other Text like class which supports oth...
   Author: Ajay Srivastava, 2012-09-11, 08:21
Grouping comparator - Hadoop - [mail # user]
...Hi,  Can someone please explain default implementation of grouping comparator i. e. if I do not specify a custom grouping comparator then which comparator i s called to decide the group...
   Author: Ajay Srivastava, 2012-06-04, 10:56
Different input streams - Hadoop - [mail # user]
...Hi,  If there are two inputs to a hadoop job one is text and another is binary ( Sequence file), is there a way to set InputFormatClass to these two differe nt streams ? job.setInputFor...
   Author: Ajay Srivastava, 2012-05-01, 08:02
Re: Passing a value from main() to map() - Hadoop - [mail # user]
...Hi, It seems that you are trying to code a hadoop job which takes input from stdin ? As far as I know it is not possible as hadoop job works on input coming in batches not on real time strea...
   Author: Ajay Srivastava, 2012-04-26, 09:28
Re: How to modify hadoop-wordcount example to display File-wise results. - Hadoop - [mail # user]
...Hi Aaron, I guess that it can be done by using counters. You can define a counter for each node in your cluster and then, in map met hod increment a node specific counter either by checking ...
   Author: Ajay Srivastava, 2012-03-30, 00:57
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