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Re: is time sync required among all nodes? - MapReduce - [mail # user]
...Time sync is always a good idea if for no other reason than being able to collate logs when debugging.  Issues may also result if a client is expecting to reliably compare timestamps, e...
   Author: Daryn Sharp, 2013-06-06, 13:38
[MAPREDUCE-5262] AM generates NPEs when RM connection fails - MapReduce - [issue]
...If the AM fails to connect to the RM, it causes a cascade of NPEs as the AM attempts to shutdown and exit.2013-05-21 00:31:56,153 ERROR [main] org.apache.hadoop.security.UserGroupInformation...
http://issues.apache.org/jira/browse/MAPREDUCE-5262    Author: Daryn Sharp, 2013-05-21, 17:35
Re: Hadoop fs -getmerge - MapReduce - [mail # user]
...If -getmerge is updated, specifically deleting the .crc is not necessary.  Adding an option that invokes fs.writeChecksum via a cmdline option should do the trick.  On Apr 18, 2013...
   Author: Daryn Sharp, 2013-04-22, 18:08
Re: Problem With NAT ips - MapReduce - [mail # user]
...That's unfortunate.  The NN can't really know its public ip so all it can do is tell the DN its address which happens to be private.  My first thought would be the DN knows the NN'...
   Author: Daryn Sharp, 2013-04-22, 16:33
Re: What is the difference between URI, Home Directory, Working Directory in FileSystem.java or HDFS - MapReduce - [mail # user]
...On Apr 11, 2013, at 5:33 AM, Ling Kun wrote:   Correct.   Generally correct.  However, I'd strongly suggest avoiding the use of URIs directly.  It's better to obtain your...
   Author: Daryn Sharp, 2013-04-11, 14:53
Re: RES: I want to call HDFS REST api to upload a file using httplib. - MapReduce - [mail # user]
...Try adding -L to your curl and see if that works.  Daryn  On Apr 8, 2013, at 11:05 PM, 小学园PHP wrote:  Really Thanks. But the returned URL is wrong. And the localhost is the re...
   Author: Daryn Sharp, 2013-04-09, 15:32
Re: one minute delay in running a simple ls command on hadoop (maybe near security groups..): hadoop 0.23.5 - MapReduce - [mail # user]
...Hi Gopi,  Check if you can run "groups -F hduser".  I think it's causing the delay.  Daryn  On Mar 31, 2013, at 1:17 AM, Gopi Krishna M wrote:  Hi..  I have ins...
   Author: Daryn Sharp, 2013-04-04, 12:59
[MAPREDUCE-5096] Deprecate ability to not cancel tokens when job completes - MapReduce - [issue]
...MR provides a config mapreduce.job.complete.cancel.delegation.tokens and an api Job#setCancelDelegationTokenUponJobCompletion to disable canceling tokens when a job completes.  This fun...
http://issues.apache.org/jira/browse/MAPREDUCE-5096    Author: Daryn Sharp, 2013-03-22, 21:44
[MAPREDUCE-5093] Improve RM and HS token acquisition during job submission - MapReduce - [issue]
...Jobs that intend to submit other jobs (ex. oozie, pig) require a RM token.  Yarn has added the requirement of a HS token.  Currently the submitter is required to explicitly obtain ...
http://issues.apache.org/jira/browse/MAPREDUCE-5093    Author: Daryn Sharp, 2013-03-22, 14:50
[MAPREDUCE-4936] JobImpl uber checks for cpu are wrong - MapReduce - [issue]
...The cpu checks for uberizing have two issues: the defaults are hardcoded instead of using the conf defaults the comparison against the sys cpu size is using < instead of <=  ...
http://issues.apache.org/jira/browse/MAPREDUCE-4936    Author: Daryn Sharp, 2013-01-16, 14:05
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