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Re: [VOTE] Release Apache Hadoop 2.4.1 - MapReduce - [mail # dev]
...+1 of having HDFS-6527 back ported if possible2014-06-20 7:32 GMT-07:00 Kihwal Lee :Have a Nice Day!Lohit ...
   Author: lohit, 2014-06-20, 18:26
Re: [VOTE] Release Apache Hadoop 2.3.0 - MapReduce - [mail # dev]
...To add to this, we saw this on pretty big cluster with multiple pool/queuesand different users.At one point ResourceManager was no longer handing out containers andcluster throughput dropped...
   Author: lohit, 2014-02-12, 19:59
Re: Writing an application based on YARN 2.2 - MapReduce - [mail # user]
...Apart from existing docs, there are few code examples which might be useful.   hadoop-yarn-applications-distributedshell subproject within yarn  Storm on YARN https://github.com/ya...
   Author: lohit, 2013-11-12, 19:40
Re: Encryption in HDFS - MapReduce - [mail # user]
...Another challenge of encrypt/decrypt is key management. Can  you share how are this is handled in your implementation/research  2013/2/25 Seonyeong Bak     Have a Nice Da...
   Author: lohit, 2013-02-26, 05:15
[expand - 2 more] - Re: API incompatibility between Hadoop 1.0 and Hadoop 2.0 - MapReduce - [mail # dev]
...Thanks. What I am more interested is list of APIs where users have to change code. I know that on YARN I can run jobs which still use org.apache.hadoop.mapred code. But recently we hit a cas...
   Author: lohit, 2013-02-09, 05:53
Re: [VOTE] Release hadoop-2.0.3-alpha - MapReduce - [mail # dev]
...+1 Deployed on more than 100 nodes. Ran 30TB teragen/terasort. Will run few more over the weekend to test scheduler. Things looks stable. I do see few failures, but those I believe are hardw...
   Author: lohit, 2013-02-09, 01:07
[expand - 1 more] - Re: Memory based scheduling - MapReduce - [mail # user]
...I did not know about this feature in Capacity Scheduler. Just to get more information, lets assume cluster has 4 slots on node with 8G (as mentioned by Marco). Now if 2 slots are occupied wi...
   Author: lohit, 2012-10-30, 17:33
[expand - 1 more] - Re: Max Maps for default queues in FairScheduler - MapReduce - [mail # dev]
...In a big cluster with hundreds are users, not all of them would submit their job to specific queues. And creating hundreds are pool is not very easy. Having something like userMaxMaps would ...
   Author: lohit, 2012-10-19, 00:03
Re: Hive Query with UDF - MapReduce - [mail # user]
...One idea is to write your own translation layer  which sits in between query and actual job submission. You would most likely end up having your own version of hive jar which has your t...
   Author: lohit, 2012-10-18, 02:13
Re: Reg LZO compression - MapReduce - [mail # user]
...As Robert said, If you job is mainly IO intensive and CPU are idle, then having lzo would improve your overal job performance. In your case it looks like the job you are running is not IO bo...
   Author: lohit, 2012-10-17, 04:31
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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