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Re: What protocols are used in Mappers ? - MapReduce - [mail # dev]
...Thanks Venkata for the quick response.  I hope this information would be helpful.  I am using CDH4 and I am trying to access GPU from cleanup() method of mapper class using JOCL . ...
   Author: rohit sarewar, 2013-09-21, 16:08
Fwd: Map task failed: No protocol specified - MapReduce - [mail # dev]
...Hi Dev team  Can you please help me in this regard ?   I am using CDH4 and I am trying to access GPU from cleanup() method of mapper class using JOCL . (Note: My normal code(withou...
   Author: rohit sarewar, 2013-09-21, 13:31
Map task failed: No protocol specified - MapReduce - [mail # user]
...I am using CDH4 and I am trying to access GPU from cleanup() method of mapper class using JOCL. (Note: My normal code(without map reduce) works fine on GPU).  When I execute my map-redu...
   Author: rohit sarewar, 2013-09-20, 13:42
java heap space inside my Rhive - MapReduce - [mail # user]
...Hi  I am running a rhive job on Hadoop cluster on 40 mb data. It throws an error "  java.lang.OutOfMemoryError: Java heap space" as shown below. *How do I set java heap space insid...
   Author: rohit sarewar, 2013-05-15, 14:12
Access HDFS from OpenCL - MapReduce - [mail # user]
...Hi All  My data set resides in HDFS. I need to compute 5 metrics, among which 2 are compute intensive. So I want to compute those 2 metrics on GPU using OpenCL and the rest 3 metrics us...
   Author: rohit sarewar, 2013-05-13, 13:34
OpenCL with Hadoop - MapReduce - [mail # user]
...Hi All  How do I use OpenCL(for GPU compute) with Hadoop ?  It would be great if someone could share a sample code.  Thanks & Regards Rohit Sarewar...
   Author: rohit sarewar, 2013-05-13, 13:33
Hadoop Cluster Initialization Fail - MapReduce - [mail # user]
...Hi,  I kind of cleared the logs at /var/logs with rm -rf. I know this was a stupid move. Now the cluster does not start throwing an error.: "HTTP ERROR 403  Problem accessing /cmf/...
   Author: rohit sarewar, 2013-03-25, 17:41
Submit RHadoop job using Ozzie in Cloudera Manager - MapReduce - [mail # user]
...Hi All I am using Cloudera Manager 4.5 . As of now I can submit MR jobs using Oozie.  Can we submit Rhadoop jobs using Ozzie in Cloudera Manager ?...
   Author: rohit sarewar, 2013-03-08, 10:46
Hadoop Security - MapReduce - [mail # user]
...The implementation Hadoop with Kerberos involves lot of  tickets, tokens and other authentication steps.  By what factor Kerberos will affect the speed in Hadoop ?...
   Author: rohit sarewar, 2013-03-08, 06:50
What is the difference between delegation token and Job token in Hadoop? - MapReduce - [mail # user]
...Delegation token and job token seems similar to me. I need to understand the exact difference between them ? What is the difference between delegation token and Job token in Hadoop ?...
   Author: rohit sarewar, 2013-03-05, 05:16
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