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Re: real time analytics on hadoop using spark or storm - Hadoop - [mail # user]
...As Azurry said, Spark Streaming can process data in small batches as well.  An advantage of Spark Streaming over Storm is that the same code can be used both for small and large batches...
   Author: Sandy Ryza, 2013-12-07, 01:45
Re: Any reference for upgrade hadoop from 1.x to 2.2 - Hadoop - [mail # user]
...Unfortunately there is no way to see MR1 jobs in the MR2 job history.  -Sandy   On Thu, Dec 5, 2013 at 3:47 AM, Nirmal Kumar wrote:  ...
   Author: Sandy Ryza, 2013-12-05, 17:07
Re: 答复: problems of FairScheduler in hadoop2.2.0 - Hadoop - [mail # user]
...Thanks for the additional info.  Still not sure what could be going on.  Do you notice any other suspicious LOG messages in the resourcemanager log?  Are you able to show the ...
   Author: Sandy Ryza, 2013-11-27, 17:20
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
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
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