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Re: Feed hdfs with external data. - Hadoop - [mail # user]
...Sorry, I might have misunderstood... So, you have a Java application that needs to use this configuration. In that case, I think setting the directory containing the config files into the cl...
   Author: Hemanth Yamijala, 2010-06-23, 14:30
Re: Hadoop JobTracker Hanging - Hadoop - [mail # user]
...There was also https://issues.apache.org/jira/browse/MAPREDUCE-1316 whose cause hit clusters at Yahoo! very badly last year. The situation was particularly noticeable in the face of lots of ...
   Author: Hemanth Yamijala, 2010-06-22, 17:20
Re: How to set the number of map tasks? (ver 0.20.2) - Hadoop - [mail # user]
...Felix,  uce/Job.html  As documented in the mapreduce tutorial as well as the Java documentation (http://bit.ly/9HKclu), the number of map tasks is primarily determined by the numbe...
   Author: Hemanth Yamijala, 2010-06-22, 01:43
Re: AccessControlException when calling copyFromLocalFile() - Hadoop - [mail # user]
...Ted,  ion , an,  Path) ne: ne: ser  Is there a reason why access cannot be given to the user on DFS during setup, using dfs -chmod or dfs -chown ? That seems a more correct so...
   Author: Hemanth Yamijala, 2010-06-03, 01:49
Re: JNI native library loading problem in standalone mode - Hadoop - [mail # user]
...Edward,  If it's an option to copy the libraries to a fixed location on all the cluster nodes, you could do that and configure them in the library path via mapred.child.java.opts. Pleas...
   Author: Hemanth Yamijala, 2010-06-01, 03:47
Re: Tasktracker appearing from "nowhere" - Hadoop - [mail # user]
...Peter,   If m351 has Hadoop and a mapred-site.xml or hadoop-site.xml pointing to the right JobTracker, it would register itself as a TaskTracker when Hadoop starts on it. The slave file...
   Author: Hemanth Yamijala, 2010-05-28, 09:51
Re: TaskTracker and DataNodes cannot connect to master node (NoRouteToHostException) - Hadoop - [mail # user]
...Erik,  ct ct ct ct ct ct ct ct ct ct l  Can you connect to from the host running your datanode - outside of Hadoop ? It seems like it is not reachable. Also, what pla...
   Author: Hemanth Yamijala, 2010-05-26, 02:05
Re: Active-Active Performance - Hadoop - [mail # general]
...Anthony,   When you say 'sites', do you mean two different Hadoop installations ? In general, each site is independent. So, I am unable to understand where the link comes in.   &nb...
   Author: Hemanth Yamijala, 2010-05-25, 02:19
Re: Ordinary file pointer? - Hadoop - [mail # user]
...Keith,  On Sat, May 22, 2010 at 5:01 AM, Keith Wiley  wrote: ++ side I need to access a file.  I have already implemented a version of  this interface in which the file is rea...
   Author: Hemanth Yamijala, 2010-05-22, 10:37
Re: Basic Hadoop Doubt - Hadoop - [mail # dev]
...Vamsi,   Conceptually, it would be more accurate to say that it splits the data into 'blocks' that are managed in HDFS. Of course, implementation-wise, these blocks do get stored on phy...
   Author: Hemanth Yamijala, 2010-05-18, 02:08
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