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RE: error in copy from local file into HDFS - MapReduce - [mail # user]
...Hi Ch huang,     Please check whether all datanodes in your cluster have enough disk space and number non-decommissioned nodes should be non-zero.  Thanks and regards, Vinayak...
   Author: Vinayakumar B, 2013-12-06, 03:28
Re: Path exception when running from inside IDE. - MapReduce - [mail # user]
...In your eclipse classpath core-site.xml is there? Directory which contains site xmls should be there in classpath. Not directly xml files.  Make sure fs.defaultFS points to correct hdfs...
   Author: Vinayakumar B, 2013-11-02, 12:54
Re: hadoop cares about /etc/hosts ? - MapReduce - [mail # user]
...Ensure that for each ip there is only one hostname configured in /etc/hosts file.  If you configure multiple different hostnames for same ip then os will chose first one when finding ho...
   Author: Vinayakumar B, 2013-09-10, 15:13
RE: High Availability - second namenode (master2) issue: Incompatible namespaceIDs - MapReduce - [mail # user]
...Hi,     If you are moving from NonHA (single master) to HA, then follow the below steps.  1.       Configure the another namenode's configuration in the running...
   Author: Vinayakumar B, 2012-11-16, 08:31
RE: Please Subcribe me - MapReduce - [mail # user]
...Hi Nagamallikarjuna,  Welcome to Hadoop. You can subscribe to this mailing list by sending a mail to [EMAIL PROTECTED].  Thanks, Vinay  From: inelu nagamallikarjuna [mailto:[E...
   Author: Vinayakumar B, 2012-08-27, 04:01
RE: namenode instantiation error - MapReduce - [mail # user]
...Hi Anand,  Its clearly telling namenode not able to access the lock file inside name dir.     /var/lib/hadoop-0.20/cache/hadoop/dfs/name/in_use.lock (Permission denied)  ...
   Author: Vinayakumar B, 2012-08-10, 04:44
RE: how to specify key and value for an input to mapreduce job - MapReduce - [mail # user]
...Hi Vamshi,  1. To read the input which have both key and value in text format you can use KeyValueTextInputFormat inside org.apache.hadoop.mapreduce.lib.input package as InputFormat cla...
   Author: Vinayakumar B, 2012-02-14, 15:28
RE: Does FileSplit respect the record boundary? - MapReduce - [mail # user]
...Hi Zhu,     Ø  The LineRecordReader will get the path in the HDFS itself, not on  the LocalFileSystem,     But it’s the NameNode who gives the list of DataNodes...
   Author: Vinayakumar B, 2012-02-11, 07:19
RE: Wonky reduce progress - MapReduce - [mail # user]
...Please check the defect in MAPREDUCE jira https://issues.apache.org/jira/browse/MAPREDUCE-2264  This is because the compression is enabled for map outputs and statistics are taken on co...
   Author: Vinayakumar B, 2011-08-19, 08:14
RE: Can't find main class when run ResourceManager or NodeManager - MapReduce - [mail # dev]
...Hi,  Please configure HADOOP_COMMON_HOME and HADOOP_HDFS_HOME environment variables.  And then start the resource manager it will start.   Reason: All the common classes will ...
   Author: Vinayakumar B, 2011-08-11, 06:07
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