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Re: Hadoop JARs and Eclipse - HDFS - [mail # user]
...If your goal is to simply build an application, then you can use a Maven project. Why do you require the whole of Hadoop's projects itself on Eclipse when you can simply have the dependencie...
   Author: Harsh J, 2013-06-05, 17:43
Re: YARN servers and ports - HDFS - [mail # user]
...If you're asking in terms of discovering where to communicate at, then basically just the RM scheduler address and port (yarn.resourcemanager.scheduler.address).  The NodeManager addres...
   Author: Harsh J, 2013-06-05, 17:18
Re: Recover dfs/name - HDFS - [mail # user]
...If /tmp/hadoop-user/dfs/namesecondary doesn't exist now, then yes, you need to start over. Try keeping multiple copies and on a location thats off-/tmp (use dfs.name.dir config).  On We...
   Author: Harsh J, 2013-06-05, 10:51
Re: possible to change replication factor at file creation time (with copyFromLocal)? - HDFS - [mail # user]
...Hi Julian,  Yes, "dfs" subcommand accepts config overrides via -D. Just do "hadoop dfs -Ddfs.replication=X -copyFromLocal …".  On Fri, May 31, 2013 at 10:27 PM, Julian Bui  wr...
   Author: Harsh J, 2013-05-31, 17:03
Re: splittable vs seekable compressed formats - HDFS - [mail # user]
...SequenceFiles should be seekable provided you know/manage their sync points during writes I think. With LZO this may be non-trivial.  On Thu, May 23, 2013 at 11:01 PM, John Lilley  ...
   Author: Harsh J, 2013-05-24, 06:52
Re: Is there a way to limit # of hadoop tasks per user at runtime? - HDFS - [mail # user]
...The only pain point I'd find with CS in a multi-user environment is its limitation of using queue configs. Its non-trivial to configure a queue per user as CS doesn't provide any user level ...
   Author: Harsh J, 2013-05-23, 18:24
[HDFS-4224] The dncp_block_verification log can be compressed - HDFS - [issue]
...On some systems, I noticed that when the scanner runs, the dncp_block_verification.log.curr file under the block pool gets quite large (several GBs). Although this is rolled away, we could a...
http://issues.apache.org/jira/browse/HDFS-4224    Author: Harsh J, 2013-05-23, 18:02
Re: upgrade from primary + secondary NN to active + standby NN - HDFS - [mail # user]
...FWIW, I've seen through a lot of upgrades from 1.x to 2.x and metadata issue's never been a part of it. You should be able to safely upgrade and then to configure HA. Note that you cannot di...
   Author: Harsh J, 2013-05-22, 04:55
Re: Recovering the namenode from failure - HDFS - [mail # user]
...I think he's mentioned the new NN is the same IP and Hostname as the old one, and uses an actual checkpoint. All he has to do is start the DNs back up again and they should report in fine. &...
   Author: Harsh J, 2013-05-22, 03:46
Re: [VOTE] Plan to create release candidate for 0.23.8 - HDFS - [mail # dev]
...+1  On Sat, May 18, 2013 at 2:40 AM, Thomas Graves  wrote:    Harsh J...
   Author: Harsh J, 2013-05-18, 02:19
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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