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[HADOOP-8728] Display (fs -text) shouldn't hard-depend on Writable serialized sequence files. - Hadoop - [issue]
...The Display command (fs -text) currently reads only Writable-based SequenceFiles. This isn't necessary to do, and prevents reading non-Writable-based serialization in SequenceFiles from the ...
http://issues.apache.org/jira/browse/HADOOP-8728    Author: Harsh J, 2015-04-30, 12:18
[HADOOP-7947] Validate XMLs if a relevant tool is available, when using scripts - Hadoop - [issue]
...Given that we are locked down to using only XML for configuration and most of the administrators need to manage it by themselves (unless a tool that manages for you is used), it would be goo...
http://issues.apache.org/jira/browse/HADOOP-7947    Author: Harsh J, 2015-04-27, 02:47
Re: Is there any way to limit the concurrent running mappers per job? - Hadoop - [mail # user]
...This has been introduced as a 2.7.0 feature, see MAPREDUCE-5583.On Tue, Apr 21, 2015 at 4:32 AM, Zhe Li  wrote:Harsh J ...
   Author: Harsh J, 2015-04-23, 05:56
Re: Not able to run more than one map task - Hadoop - [mail # user]
...You are likely memory/vcore starved in the NM's configs. Increase your yarn.nodemanager.resource.memory-mb andyarn.nodemanager.resource.cpu-vcores configs, or consider lowering theMR jo...
   Author: Harsh J, 2015-04-10, 04:51
Re: CPU utilization in map function - Hadoop - [mail # user]
...Asking the Giraph user lists may be a better way to get your answer:http://giraph.apache.org/mail-lists.htmlOn Sun, Apr 5, 2015 at 1:57 PM, Ravikant Dindokar wrote:Harsh J ...
   Author: Harsh J, 2015-04-08, 02:17
Re: Hadoop and HttpFs - Hadoop - [mail # user]
...You could consider using Oozie (via Hue or direct CLI). Users withHTTPFS access can define and load job descriptors on HDFS, and thenuse Oozie to trigger jobs within the cluster (the job des...
   Author: Harsh J, 2015-04-08, 02:11
[HADOOP-7781] Remove RecordIO - Hadoop - [issue]
...HADOOP-6155 deprecated RecordIO in 0.21. We should remove it from trunk, as nothing anymore uses it and the tests are taking up resources.We should attempt to remove record IO and also check...
http://issues.apache.org/jira/browse/HADOOP-7781    Author: Harsh J, 2015-03-28, 02:11
Re: Linux Container Executor (LCE) vs Default Container Executor(DCE) - Hadoop - [mail # user]
...This is incorrect. The DCE executes as the NodeManager process user ('yarn'typically), and the LCE in non-secure mode by default runs only as 'nobody'(or arbitrary static user) unless asked ...
   Author: Harsh J, 2015-03-26, 18:33
Re: Swap requirements - Hadoop - [mail # user]
...The suggestion (regarding swappiness) is not for disabling swap as much asit is to 'not using swap (until really necessary)'. When you run a constantmemory-consuming service such as HBase yo...
   Author: Harsh J, 2015-03-25, 22:28
Re: namenode recovery - Hadoop - [mail # user]
...Not automatically. You'd need to copy over the VERSION and fsimage* filesfrom your SecondaryNN's checkpoint directory over to the new NameNode'sconfigured name directory to start it back up ...
   Author: Harsh J, 2015-03-25, 22:25
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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