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Re: question about preserving data locality in MapReduce with Yarn - Hadoop - [mail # user]
...Splits are a MapReduce concept . Check out FileInputFormat for how an example of how to get block locations.  You can then pass these locations into an AMRMClient.ContainerRequest. &nbs...
   Author: Sandy Ryza, 2013-10-31, 22:59
Re: yarn.nodemanager.vmem-check-enabled - Hadoop - [mail # user]
...Hi John,  At Cloudera we turn it off by default and recommend doing so because of the way that Java can behave weirdly with high vmems.  -Sandy   On Sun, Oct 20, 2013 at 7:34 ...
   Author: Sandy Ryza, 2013-10-24, 01:19
[expand - 1 more] - Re: Why my tests shows Yarn is worse than MRv1 for terasort? - Hadoop - [mail # user]
...Unfortunately yes.  I agree that it should be documented.  The only way to compare fairly is to use the same terasort jar against both.  When I've done comparisons, I've used ...
   Author: Sandy Ryza, 2013-10-24, 00:30
Re: mentor needed - Hadoop - [mail # dev]
...Hi Amr,  The best place to start is searching for JIRAs with the "newbie" label.  Here are a couple YARN ones that I'd be happy to help you with: https://issues.apache.org/jira/bro...
   Author: Sandy Ryza, 2013-10-20, 20:46
Re: moving up the release versions in JIRA - Hadoop - [mail # dev]
...Thanks Steve. Just did the same for YARN.  7 JIRAs with 2.2.0 target versions moved to 2.2.1.  -Sandy   On Fri, Oct 18, 2013 at 1:56 AM, Steve Loughran wrote:  ...
   Author: Sandy Ryza, 2013-10-18, 21:09
Re: Yarn never use TeraSort#TotalOrderPartitioner when run TeraSort job? - Hadoop - [mail # user]
...Hi Sam,  Have you tried changing the map or reduce classes and seeing if that has any effect?  -Sandy   On Fri, Oct 18, 2013 at 8:05 AM, Ravi Prakash  wrote:  ...
   Author: Sandy Ryza, 2013-10-18, 15:53
Re: streaming documentation in Hadoop 2? - Hadoop - [mail # dev]
...Thanks Eli, that explains it.   On Mon, Oct 14, 2013 at 3:30 PM, Eli Collins  wrote:  ...
   Author: Sandy Ryza, 2013-10-14, 22:41
Re: State of Art in Hadoop Log aggregation - Hadoop - [mail # user]
...Just a clarification: Cloudera Manager is now free for any number of nodes. Ref: http://www.cloudera.com/content/cloudera/en/products/cloudera-manager.html  -Sandy   On Fri, Oct 11...
   Author: Sandy Ryza, 2013-10-11, 17:00
[HADOOP-9775] Add tracking IDs to FS tokens to allow tracing FS operations back to job - Hadoop - [issue]
...It would be helpful for auditing to allow tracing of file system operations to the higher-level operations that encompass them (e.g. MR jobs).Approaches to achieving this by logging delegati...
http://issues.apache.org/jira/browse/HADOOP-9775    Author: Sandy Ryza, 2013-10-08, 20:06
[expand - 1 more] - Re: question about when do resource matching in YARN - Hadoop - [mail # dev]
...How would the ZK approach make things faster?  Are you saying the AMs would do the watching?  Currently containers assignments aren't actually sent to the NodeManagers on heartbeat...
   Author: Sandy Ryza, 2013-09-24, 15:44
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