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Re: Rapid growth in Non DFS Used disk space - HDFS - [mail # user]
...dfs.data.dir/current is used by datanodes to store blocks. This directory should only have files starting with blk-*  Things to check: - Are there other files that are not blk related? ...
   Author: suresh srinivas, 2011-05-15, 04:20
[expand - 11 more] - Re: [Discuss] Merge federation branch HDFS-1052 into trunk - HDFS - [mail # dev]
...We have been testing federation regularly with MapReduce with yahoo-merge branches. With trunk we missed the contrib (raid). The dependency with project splits has been crazy. Not sure how l...
   Author: suresh srinivas, 2011-05-03, 02:17
Re: CDH and Hadoop - Hadoop - [mail # user]
...On Thu, Mar 24, 2011 at 7:04 PM, Rita  wrote:   Yahoo! discontinued the distribution in favor of making Apache Hadoop the most stable and the go to place for Hadoop releases. So al...
   Author: suresh srinivas, 2011-03-25, 03:08
[expand - 4 more] - Re: Merging Namenode Federation feature (HDFS-1052) to trunk - HDFS - [mail # dev]
... Allen,can you please add details on what complexity you are talking about here? (I have already asked this question many times)  before.  You could chose to run the cluster w...
   Author: suresh srinivas, 2011-03-24, 09:34
Re: hadoop fs -du & hbase table size - HDFS - [mail # user]
...When you brought down the DN, the blocks in it were replicated to the remaining DNs. When the DN was added back, the blocks in it were over replicated, resulting in deletion of the extra rep...
   Author: suresh srinivas, 2011-03-15, 08:32
[expand - 1 more] - Re: Request: federation JIRA naming? - HDFS - [mail # dev]
...Having the naming convention that we use helps manage emails better due to subject lines including "HDFS Federation". As far as tagging is concerned, all federation jiras are subtasks of HDF...
   Author: suresh srinivas, 2011-02-26, 05:47
Re: copy a file from hdfs to local file system with java - HDFS - [mail # user]
...For an example how it is done, look at FsShell#copyToLocal() and its internal implementation. It uses FileUtil#copy() method to do this copying.  On Fri, Feb 25, 2011 at 5:08 AM, Alessa...
   Author: suresh srinivas, 2011-02-25, 18:24
Re: corrupt blocks after restart - HDFS - [mail # user]
...The problem is that replicas for 3609 blocks are not reported to namenode.  Do you have datanodes in exclude file? What is the number of registered nodes before start compared to what i...
   Author: suresh srinivas, 2011-02-19, 08:10
Re: Data Nodes do not start - Hadoop - [mail # user]
...On Tue, Feb 8, 2011 at 11:05 PM, rahul patodi  wrote:   This is a sure recipe for disaster. The VERSION file is a file system meta data file not to be messed around with. At worst,...
   Author: suresh srinivas, 2011-02-09, 19:03
[expand - 1 more] - Re: Secondary Namenode doCheckpoint, FileNotFoundException - HDFS - [mail # user]
...I suspect namenode cannot access secondary namenode URLs If you can have log from secondary namenode problem along with the corresponding nameno...
   Author: suresh srinivas, 2011-01-06, 23:29
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