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Re: How to make the setting changes works - Hadoop - [mail # user]
...Hi Geelong, What's the ownership and permissions on /usr/hadoop/tmp/dfs/data?  If I recall correctly, I believe it should be hdfs:hadoop, where the owner has full permissions and the gr...
   Author: Robert Molina, 2013-04-24, 16:40
Re: Decommissioning Nodes in Production Cluster. - Hadoop - [mail # user]
...Hi Dhanasekaran, I believe you are trying to ask if it is recommended to use the decommissioning feature to remove datanodes from your cluster, the answer would be yes.  As far as how t...
   Author: Robert Molina, 2013-02-12, 18:13
Re: Hadoop Pseudo-configuration - Hadoop - [mail # user]
...Hi Shagun, You may want to verify if all the services are running.  Try running jps to get list of java processes.  Ideally, if all is well you should see the following processes i...
   Author: Robert Molina, 2013-01-17, 00:33
Re: Possible to run an application jar as a hadoop daemon? - Hadoop - [mail # user]
...Hi Krishna, Do you simply want to schedule the job to run at  specific times?  If so, I believe oozie maybe what you are looking for.  Regards, Robert  On Fri, Jan 4, 201...
   Author: Robert Molina, 2013-01-04, 22:26
[expand - 1 more] - Re: Encrypted Shuffle Help - Hadoop - [mail # user]
...Hi Ryan, Sorry overlooked that you were running Teragen which doesn't execute a shuffle, hence it's not getting the error.  So initial thoughts of issue being specific to mapreduce prog...
   Author: Robert Molina, 2012-12-19, 18:51
[expand - 1 more] - Re: Task Tracker Not Starting in Hadoop-1.0.3 Help Please - Hadoop - [mail # user]
...Hi Dibyendu, Looking back at your logs, you are trying to start TT on the 120 box where your the master processes along with datanode is running.  I was wondering if you tried to launch...
   Author: Robert Molina, 2012-12-05, 22:50
Re: Unable to process jobs - Status stuck on Initialize - Hadoop - [mail # user]
...Hi Mike, Is your namenode up and running?  Also, you can try checking the job tracker logs to see if it provides any information.  Regards, Robert  On Tue, Dec 4, 2012 at 10:3...
   Author: Robert Molina, 2012-12-04, 21:59
Re: Socket timeout for BlockReaderLocal - Hadoop - [mail # user]
...Hi Haitao, To help isolate, what happens if you run a different job?  Also, if you view the namenode webui or the specific datanode webui having the issue, are there any indicators of i...
   Author: Robert Molina, 2012-12-04, 19:54
Re: Facebook corona compatibility - Hadoop - [mail # user]
...Hi Amit, There is a mention here to Start in the hadoop-20 parent path : https://github.com/facebook/hadoop-20/wiki/Corona-Single-Node-Setup  Regards, Rob  On Mon, Nov 12, 2012 at ...
   Author: Robert Molina, 2012-11-21, 18:18
Re: 回复: HBase, org.apache.hadoop.hbase.PleaseHoldException: Master is initializing - Hadoop - [mail # user]
...For your reference, here is an explanation of the exception: http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/PleaseHoldException.html  HTH -Rob On Sun, Nov 11, 2012 at 2:11 AM, ...
   Author: Robert Molina, 2012-11-15, 16:43
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