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[MAPREDUCE-5689] MRAppMaster does not preempt reducers when scheduled maps cannot be fulfilled - MapReduce - [issue]
...We saw corner case where Jobs running on cluster were hung. Scenario was something like this. Job was running within a pool which was running at its capacity. All available containers were o...
http://issues.apache.org/jira/browse/MAPREDUCE-5689    Author: Lohit Vijayarenu, 2014-09-04, 00:42
[MAPREDUCE-510] A way to get tasks current working directory via JobConf - MapReduce - [issue]
...It would be good to have tasks know its current working directory via JobConf, instead of deriving the same or trying to get local current working directory. I see that we already derive tha...
http://issues.apache.org/jira/browse/MAPREDUCE-510    Author: Lohit Vijayarenu, 2014-07-19, 00:47
[MAPREDUCE-470] jobdetails.jsp could show analysejobhistory.jsp details after job is complete - MapReduce - [issue]
...It would be good to have analysejobhistory details shown on jobdetails.jsp for successfully completed jobs....
http://issues.apache.org/jira/browse/MAPREDUCE-470    Author: Lohit Vijayarenu, 2014-07-19, 00:36
[MAPREDUCE-302] Maintaining cluster information across multiple job submissions - MapReduce - [issue]
...Could we have a way to maintain cluster state across multiple job submissions.Consider a scenario where we run multiple jobs in iteration on a cluster back to back. The nature of the job is ...
http://issues.apache.org/jira/browse/MAPREDUCE-302    Author: Lohit Vijayarenu, 2014-07-17, 20:47
[MAPREDUCE-4966] Env variable for JobHistory JVM OPTS - MapReduce - [issue]
...There seems to be no option to set JVM OPTS for JobHistoryServer. One of the common setting is having Xmx value passed to it. As of now it can be done only via JVM_OPTS or HADOOP_CLIENT_OPTS...
http://issues.apache.org/jira/browse/MAPREDUCE-4966    Author: Lohit Vijayarenu, 2013-01-30, 04:28
[MAPREDUCE-128] JobTracker Startup failed with java.net.BindException - MapReduce - [issue]
...We have seen one case where JobTracker failed with IOException but later retries of startup fails with BindException going into loop before failing.Here is the stacktrace.<stack trace>...
http://issues.apache.org/jira/browse/MAPREDUCE-128    Author: Lohit Vijayarenu, 2013-01-12, 19:26
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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