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Re: "java.lang.Throwable: Child Error " And " Task process exit with nonzero status of 1." - MapReduce - [mail # user]
...Moving this to mapreduce-user (this is the right list)..  Could you please look at the TaskTracker logs around the time when you  see the task failure. That might have something mo...
   Author: Devaraj Das, 2011-07-11, 06:20
Re: MR2 and local disk failures - MapReduce - [mail # dev]
...Thanks Eli for pointing this out. I personally dont know if anyone is   working on it. I will check.  Sent from my iPhone  On Jul 5, 2011, at 1:59 PM, Eli Collins  wrote:...
   Author: Devaraj Das, 2011-07-06, 03:13
Re: mapred.tasktracker.map.tasks.maximum is not taking into effect - MapReduce - [mail # user]
...The properties mapred.tasktracker.{map,reduce}.tasks.maximum are node level parameters, and are read by tasktrackers when they start up. Passing them i n the job confing doesn't do any chang...
   Author: Devaraj Das, 2011-07-06, 02:19
[MAPREDUCE-1319] Refactor ClientProtocol.getSystemDir usage on the job client side to instead use ClientProtocol.getStagingAreaDir - MapReduce - [issue]
...MAPREDUCE-181 introduced ClientProtocol.getStagingAreaDir. It'd be good to refactor the client side where it infers the JobTracker's filesystem, etc. based on this. Seems like the client nee...
http://issues.apache.org/jira/browse/MAPREDUCE-1319    Author: Devaraj Das, 2011-01-13, 02:27
[MAPREDUCE-718] Support for per-phase speculative execution - MapReduce - [issue]
...It would be good to have support for per-phase speculative execution where the algorithm looks at the current phase of a task, and compares with the other tasks in the same phase before deci...
http://issues.apache.org/jira/browse/MAPREDUCE-718    Author: Devaraj Das, 2010-12-12, 17:10
[MAPREDUCE-1550] UGI.doAs should not be used for getting the history file of jobs - MapReduce - [issue]
...When the jobtracker tries to open a job history file it does a doAs to get the filesystem for the user (that had submitted the job). This should not be done since the job history files are o...
http://issues.apache.org/jira/browse/MAPREDUCE-1550    Author: Devaraj Das, 2010-09-09, 11:44
[MAPREDUCE-1520] TestMiniMRLocalFS fails on trunk - MapReduce - [issue]
...TestMiniMRLocalFS fails on trunk. I checked with both trunk revs - pre and post MAPREDUCE-1430 commit and it failed in both the cases....
http://issues.apache.org/jira/browse/MAPREDUCE-1520    Author: Devaraj Das, 2010-08-24, 21:20
[MAPREDUCE-1457] For secure job execution, couple of more UserGroupInformation.doAs needs to be added - MapReduce - [issue]
...During our testing in a kerberos environment, we had to add UserGroupInformation.doAs blocks in certain places....
http://issues.apache.org/jira/browse/MAPREDUCE-1457    Author: Devaraj Das, 2010-08-24, 21:20
[MAPREDUCE-1454] The servlets should quote server generated strings sent in the response - MapReduce - [issue]
...This is related to HADOOP-6151 but for output. We need to go through all the servlets/jsps and pass all the response strings that could be based on the incoming request or user's data throug...
http://issues.apache.org/jira/browse/MAPREDUCE-1454    Author: Devaraj Das, 2010-08-24, 21:20
[MAPREDUCE-1455] Authorization for servlets - MapReduce - [issue]
...This jira is about building the authorization for servlets (on top of MAPREDUCE-1307). That is, the JobTracker/TaskTracker runs authorization checks on web requests based on the configured j...
http://issues.apache.org/jira/browse/MAPREDUCE-1455    Author: Devaraj Das, 2010-08-24, 21:20
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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