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[expand - 1 more] - Re: Disc not equally utilized in hdfs data nodes - MapReduce - [mail # user]
...The spaces may be a problem if you are using the older 1.x releases. Please try to specify the list without spaces, and also check if all of these paths exist and have some DN owned director...
   Author: Harsh J, 2013-09-05, 17:50
Re: How to update the timestamp of a file in HDFS - MapReduce - [mail # user]
...There's no shell command (equivalent to Linux's touch) but you can use the Java API: http://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileSystem.html#setTimes(org.apache.hadoop...
   Author: Harsh J, 2013-09-05, 05:36
Re: Hadoop Yarn - MapReduce - [mail # user]
...This is sorta a regression with YARN+MR2. In MR1 we've had the administrative ability to lock down changes to mapred.child.java.opts on a per node basis, as Tasks would load the TT config an...
   Author: Harsh J, 2013-09-04, 06:08
Re: yarn-site.xml and aux-services - MapReduce - [mail # user]
...We could class-load directly from HDFS, like HBase Co-Processors do.   Isn't this more complex than just running a dedicated service all the time, and/or implementing a way to spawn/end...
   Author: Harsh J, 2013-09-04, 06:05
Re: forbid use of hadoop.job.ugi to impersonate user without Kerberos - MapReduce - [mail # user]
...No.  There are several ways a user can impersonate another user if you do not use strong authentication (i.e. kerberos). Some ways are implemented with that intention, for users who don...
   Author: Harsh J, 2013-09-04, 05:32
Re: namenode name dir - MapReduce - [mail # user]
...You are correct - a single directory should suffice. That said, if you still want multiple copies, you can continue to configure it that way.  On Fri, Aug 30, 2013 at 11:32 AM, lei liu ...
   Author: Harsh J, 2013-08-30, 06:17
[expand - 1 more] - Re: Hadoop HA error "JOURNAL is not supported in state standby" - MapReduce - [mail # user]
...On the actual issue though: Do you also have auto-failover configured?  On Fri, Aug 30, 2013 at 1:39 AM, orahad bigdata  wrote:    Harsh J...
   Author: Harsh J, 2013-08-29, 20:25
Re: Is hadoop tread safe? - MapReduce - [mail # user]
...Map tasks run in parallel spawned JVMs, so are isolated from one another at runtime. Use of static functions shouldn't affect you generally.  Default Map I/O is single-threaded. If you ...
   Author: Harsh J, 2013-08-29, 15:19
Re: hadoop2 and Hbase0.94 - MapReduce - [mail # user]
...Moving to [EMAIL PROTECTED].  Please share your hbase-site.xml and core-site.xml. Was this HBase cluster previously running on a standalone local filesystem mode?  On Wed, Aug 28, ...
   Author: Harsh J, 2013-08-28, 08:44
Re: Issue with fs.delete - MapReduce - [mail # user]
...Please also try to share your error/stacktraces when you post a question.  All I can suspect is that your URI is malformed, and is missing the authority component. That is, it should be...
   Author: Harsh J, 2013-08-28, 08:40
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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