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Re: Reg: Map output copy failure - HDFS - [mail # user]
...What was the job or query you were running?  Couple of suggestions: 1. Reduce data set size with job chaining 2. Increase Reduce task heap 3. If you are using Hive/Pig, you may want to ...
   Author: Bharath Mundlapudi, 2012-12-11, 02:09
Re: Strange machine behavior - HDFS - [mail # user]
...Are you seeing any performance impact with this cache increase? It is normal in linux system to grab high cache level.    -Bharath   ________________________________  Fro...
   Author: Bharath Mundlapudi, 2012-12-11, 02:06
[HDFS-1592] Datanode startup doesn't honor volumes.tolerated - HDFS - [issue]
...Datanode startup doesn't honor volumes.tolerated for hadoop 20 version....
http://issues.apache.org/jira/browse/HDFS-1592    Author: Bharath Mundlapudi, 2012-11-26, 11:23
[HDFS-2065] Fix NPE in DFSClient.getFileChecksum - HDFS - [issue]
...The following code can throw NPE if callGetBlockLocations returns null.If server returns null List<LocatedBlock> locatedblocks        = callGetBlockLocations(n...
http://issues.apache.org/jira/browse/HDFS-2065    Author: Bharath Mundlapudi, 2012-09-12, 03:11
[HDFS-2137] Datanode Disk Fail Inplace - HDFS - [issue]
...This sub-task will be a place holder for all the disk fail inplace issues related to Datanode....
http://issues.apache.org/jira/browse/HDFS-2137    Author: Bharath Mundlapudi, 2012-03-14, 04:06
[expand - 1 more] - Re: Why total node just 1 - HDFS - [mail # user]
...Hi Martinus,  As Harsha mentioned, HA is under development.  Couple of things you can do for HOT-COLD setup are:  1. Multiple dirs for ${dfs.name.dir} 2. Place ${dfs.name.dir}...
   Author: Bharath Mundlapudi, 2012-01-04, 17:45
Re: What if one of the directory(dfs.name.dir) rw error ? - HDFS - [mail # user]
...Couple of things you c ould do. chmod 000 is one. 1. umount -l 2. mount ro only 3. If machin e has hot swappable disks, pull out a disk.  -Bharath    ______ __________________...
   Author: Bharath Mundlapudi, 2011-05-25, 20:08
Re: Starting Datanode - HDFS - [mail # user]
...I think, that code is there for jsvc. If you run hadoop in secure mode, it  executes this path. There is nothing wrong in -jvm option since it meant fo r jsvc.   In case of secure ...
   Author: Bharath Mundlapudi, 2011-05-21, 20:51
Re: Question about hadoop namenode -format -clusterid <clusterID> - HDFS - [mail # dev]
...Correct way to format a namenode :  /bin/hdfs namenode -form at -clusterid   PS: Set your environment right like common home et c.   Only first time it requires the cluster id...
   Author: Bharath Mundlapudi, 2011-05-12, 04:06
Re: Other FS Pointer? - HDFS - [mail # user]
...Adding more,  Luster  http://wiki.lustre.org/index.php/Main_Page    Ceph  http://ceph.newdream.net  Hydra (In python)  http:/ /projects.cs.luc.edu/comp412/...
   Author: Bharath Mundlapudi, 2011-05-06, 07:43
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