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RE: MiniDFSCluster setup - MapReduce - [mail # user]
...Hi Kareem,  Hi See that issue you are facing is https://issues.apache.org/jira/browse/HADOOP-9908,  It expectes common-version-info.properties to be present under classes directory...
   Author: Vinayakumar B, 2013-12-16, 01:53
RE: issue about Shuffled Maps in MR job summary - MapReduce - [mail # user]
...It looks simple, :)  Shuffled Maps= Number of Map Tasks * Number of Reducers  Thanks and Regards, Vinayakumar B  From: ch huang [mailto:[EMAIL PROTECTED]] Sent: 11 December 20...
   Author: Vinayakumar B, 2013-12-11, 05:48
RE: how to handle the corrupt block in HDFS? - MapReduce - [mail # user]
...Hi ch huang,  It may seem strange, but the fact is, CorruptBlocks through JMX or http://NNIP:50070/jmx means "Number of blocks with corrupt replicas". May not be all replicas are corrup...
   Author: Vinayakumar B, 2013-12-11, 01:21
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
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB