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Re: log - MapReduce - [mail # user]
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...For this particular file you have set the replication factor to be 10 but there is only one available. Did your dadanodes go down ? or you retired datanodes? Or your number of datanodes is l...
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Author: Nitin Pawar,
2013-04-19, 06:44
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Re: Can we setup Flume in Apache Hadoop? - MapReduce - [mail # user]
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...in apache hadoop ? what do you want to do ? On Mon, Apr 15, 2013 at 8:10 PM, Ramasubramanian Narayanan wrote: Nitin Pawar...
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Author: Nitin Pawar,
2013-04-15, 14:41
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Re: How to find the num of Mappers - MapReduce - [mail # user]
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...your question is answered here http://wiki.apache.org/hadoop/HowManyMapsAndReduces To answer first part of your question, it is not mandatory to run all the maps of a given job a...
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Author: Nitin Pawar,
2013-04-12, 09:05
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Re: 10 TB of a data file. - MapReduce - [mail # user]
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...The actual amount of disk spaceconsumed by the file depends on the file system . The maximum file size a file system supports depends on the number of bitsreserved to store size information ...
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Author: Nitin Pawar,
2013-04-12, 08:59
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Re: Will HDFS refer to the memory of NameNode & DataNode or is it a separate machine - MapReduce - [mail # user]
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...HDFS - hadoop distributed file system as it stands a file system .. first basic question you will need to search is do you need a process to run a file system? when you find an answer to tha...
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Author: Nitin Pawar,
2013-04-12, 08:57
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Re: Need help, Can I disable datanode block report? - MapReduce - [mail # user]
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...disabling the block report will cause the namenode to consider the blocks are missing. if you think it is slowing down the cluster then you can increase the time for heartbeats . Also ...
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Author: Nitin Pawar,
2013-04-10, 08:15
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Re: Best format to use - MapReduce - [mail # user]
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...there is another important point to look as well what kind of queries are you planning to run? there are different types of formats which suit to different needs. like when you are doi...
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Author: Nitin Pawar,
2013-04-09, 16:56
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Re: Small cluster setup. - MapReduce - [mail # user]
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...or set this variable HADOOP_PREFIX to the directory where hadoop is installed. On Wed, Mar 13, 2013 at 7:32 PM, Nitin Pawar wrote: Nitin Pawar...
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Author: Nitin Pawar,
2013-03-13, 14:03
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Re: How to find Replication factor for one perticular folder in HDFS - MapReduce - [mail # user]
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...see if the link below helps you http://www.michael-noll.com/blog/2011/10/20/understanding-hdfs-quotas-and-hadoop-fs-and-fsck-tools/ On Mon, Feb 25, 2013 at 10:36 PM, Dhanasekara...
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Author: Nitin Pawar,
2013-02-25, 17:20
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Re: How to start Data Replicated Blocks in HDFS manually. - MapReduce - [mail # user]
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...did you start the cluster with replication factor 3 and later changed it to 2? also did you enable rack awareness in your configs and both the nodes are on same rack? On Mon, F...
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Author: Nitin Pawar,
2013-02-25, 14:20
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