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Re: if i configed NN HA,should i still need start backup node? - MapReduce - [mail # user]
...No, you do not require the BackupNode in a HA NN configuration.  On Tue, Oct 29, 2013 at 9:31 AM, ch huang  wrote:    Harsh J...
   Author: Harsh J, 2013-10-29, 12:06
[expand - 1 more] - Re: temporary file locations for YARN applications - MapReduce - [mail # user]
...The dirs in that env-var are app-specific and are for the app's user to utilize. You shouldn't have any permission issues working within them.  The LocalDirAllocator is still somewhat M...
   Author: Harsh J, 2013-10-21, 18:11
Re: About block splitting, input split and TextInputFormat in MapReduce - MapReduce - [mail # dev]
...Yoonmin,  Please give http://wiki.apache.org/hadoop/HadoopMapReduce a read, it covers the read-records-across-blocks scenario.  On Thu, Oct 17, 2013 at 8:47 PM, Yoonmin Nam  w...
   Author: Harsh J, 2013-10-19, 06:02
[expand - 1 more] - Re: is jdk required to run hadoop or jre alone is sufficient - MapReduce - [mail # user]
...No, you do not need JDK to just run Apache Hadoop.  On Thu, Oct 17, 2013 at 2:16 PM, oc tsdb  wrote:    Harsh J...
   Author: Harsh J, 2013-10-17, 09:34
Re: using environment variables in XML conf files - MapReduce - [mail # user]
...Java provides a system property for ${user.home} that is usually set to the same as $HOME of the session on Linux. You can therefore use "${user.home}/tmp/hadoop-${user.name}".  On Wed,...
   Author: Harsh J, 2013-10-10, 03:05
Re: Accessing only particular folder using hadoop streaming - MapReduce - [mail # user]
...You need to use globs when passing your input path, like below perhaps:  data/shard*/d1*  On Thu, Oct 3, 2013 at 1:28 AM, jamal sasha  wrote:    Harsh J...
   Author: Harsh J, 2013-10-03, 05:21
[expand - 1 more] - Re: Calling the JobTracker from Reducer throws InvalidCredentials GSSException - MapReduce - [mail # user]
...Hm, I think I forgot the bit where Oozie also adds a DT for itself to use: https://github.com/apache/oozie/blob/release-4.0.0/core/src/main/java/org/apache/oozie/service/HadoopAccessorServic...
   Author: Harsh J, 2013-09-29, 10:51
[expand - 1 more] - Re: Is there any way to partially process HDFS edits? - MapReduce - [mail # user]
...Tom,  That is valuable info. When we "replay" edits, we would be creating and then deleting those files - so memory would grow in between until the delete events begin appearing in the ...
   Author: Harsh J, 2013-09-26, 17:07
Re: 2 Map tasks running for a small input file - MapReduce - [mail # user]
...Hi Sai,  What Viji indicated is that the default Apache Hadoop setting for any input is 2 maps. If the input is larger than one block, regular policies of splitting such as those stated...
   Author: Harsh J, 2013-09-26, 11:54
Re: Lz4Codec - MapReduce - [mail # user]
...The LZ4 codec was introduced in 2.x releases and is not present in 1.x.  On Tue, Sep 24, 2013 at 8:20 PM, Tomás Fernández Pena  wrote:    Harsh J...
   Author: Harsh J, 2013-09-25, 01:54
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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