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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
Re: Tutorials that work with modern Hadoop (v1.x.y)? - MapReduce - [mail # user]
...1.x isn't an ultra modern version. It revises over the 0.20.x releases, which many books carried, and they may still be valid. 2.x is the next major version after 0.20.x/1.x.  The numbe...
   Author: Harsh J, 2013-08-27, 22:42
Re: libjars error - MapReduce - [mail # user]
...You're not using the configuration provided by the ToolRunner instantiation:  Change:  Job job = new Job();  To:  Job job = new Job(getConf());  On Wed, Aug 28, 2013...
   Author: Harsh J, 2013-08-27, 22:39
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