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[HDFS-4509] Provide a way to ask Balancer to exclude certain DataNodes in its computation and/or work. - HDFS - [issue]
...This comes particularly useful in clusters that have a split between DNs used for regular purpose and DNs used for HBase RSes specifically. By asking the balancer to exclude the DNs that RSe...
http://issues.apache.org/jira/browse/HDFS-4509    Author: Harsh J, 2013-02-28, 17:41
Re: hdfs.h C API - HDFS - [mail # dev]
...Hi!,  Assuming you have a "hadoop" command available (i.e. the $HADOOP_HOME/bin/hadoop script), try to do:  export CLASSPATH=`hadoop classpath`  And then try to run your ./a.o...
   Author: Harsh J, 2013-02-28, 17:29
Re: How to find Replication factor for one perticular folder in HDFS - HDFS - [mail # user]
...Its "hdfs getconf", not "hdfs -getconf". The first sub-command is not an option arg, generally, when using the hadoop/hdfs/yarn/mapred scripts.  On Wed, Feb 27, 2013 at 3:40 PM, Dhanase...
   Author: Harsh J, 2013-02-28, 06:26
Re: Errors come out when starting Balancer - HDFS - [mail # user]
...Hi,  A few points:  - The property "fs.default.name" has been deprecated in favor of the newer name "fs.defaultFS". - When using nameservice IDs, you shouldn't rely on the RPC addr...
   Author: Harsh J, 2013-02-25, 07:18
Re: One NameNode keeps Rolling Edit Log on HDFS Federation - HDFS - [mail # user]
...Could you send us the log messages (with timestamps) which you think is behind the behavior you see? The new edit log format is different than the one in 1.x, and uses several smaller edit l...
   Author: Harsh J, 2013-02-25, 07:16
[HDFS-4508] Two minor improvements to the QJM Deployment docs - HDFS - [issue]
...Suggested by ML user Azurry, the docs at http://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/HDFSHighAvailabilityWithQJM.html#Deployment_details can be improved for two specif...
http://issues.apache.org/jira/browse/HDFS-4508    Author: Harsh J, 2013-02-21, 13:47
Re: How to test Hadoop MapReduce under another File System NOT HDFS - HDFS - [mail # user]
...Hi Ling,  On Thu, Feb 21, 2013 at 6:42 PM, Ling Kun  wrote:  We have several unit tests under HDFS sources (you can view it in the sources) which catch quite a bit of regressi...
   Author: Harsh J, 2013-02-21, 13:23
Re: ISSUE :Hadoop with HANA using sqoop - HDFS - [mail # user]
...The error is truncated, check the actual failed task's logs for complete info:  Caused by: com.sap… what?  Seems more like a SAP side fault than a Hadoop side one and you should as...
   Author: Harsh J, 2013-02-21, 06:33
Re: About Hadoop Deb file - HDFS - [mail # user]
...Try the debs from the Apache Bigtop project 0.3 release, its a bit of an older 1.x release but the debs would work well: http://archive.apache.org/dist/incubator/bigtop/bigtop-0.3.0-incubati...
   Author: Harsh J, 2013-02-21, 05:40
Re: Topology script frequency - HDFS - [mail # user]
...NN refers to the rack topology script/class when a new node joins (i.e. it doesn't have the node's IP already in cache), when it starts up, and (I think) also when you issue -refreshNodes. &...
   Author: Harsh J, 2013-02-20, 20:23
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