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Re: [DISCUSS] Clarification on Compatibility Policy: Upgraded Client + Old Server - MapReduce - [mail # dev]
...It makes sense only for YARN today where we separated out the clients. HDFS is still a monolithic jar so this compatibility issue is kind of invalid there.+vinodOn Mar 19, 2014, at 1:59 PM, ...
   Author: Vinod Kumar Vavilapalli, 2014-03-19, 23:28
Re: Can Mapreduce run on Hadoop 2.3 without Yarn - MapReduce - [mail # dev]
...If you mean on top of JobTracker/TaskTracker, no you cannot do that in any of the 2.x releases.+VinodOn Mar 4, 2014, at 7:43 AM, hwpstorage  wrote:CONFIDENTIALITY NOTICENOTICE: This mes...
   Author: Vinod Kumar Vavilapalli, 2014-03-04, 17:36
Re: Re-swizzle 2.3 - MapReduce - [mail # dev]
...I moved out HADOOP-10301 and HDFS-4564 out of 2.3 as they do not seem likeregressions. Please revert back if you disagree.Given that, I think we are ready to cut a RC.+VinodOn Fri, Feb 7, 20...
   Author: Vinod Kumar Vavilapalli, 2014-02-10, 20:04
Re: Reducers are launched after jobClient is exited. - MapReduce - [mail # dev]
...MapReduce AppMaster and YARN at large use asynchronous event handling inside the JVM and so you may run into race conditions like this.Even otherwise, doing this in a deterministic manner is...
   Author: Vinod Kumar Vavilapalli, 2014-01-29, 06:48
Re: DistributedCache is empty - MapReduce - [mail # user]
...What is the version of Hadoop that you are using?  +Vinod  On Jan 16, 2014, at 2:41 PM, Keith Wiley  wrote:    CONFIDENTIALITY NOTICE NOTICE: This message is intende...
   Author: Vinod Kumar Vavilapalli, 2014-01-17, 17:46
Re: How to make AM terminate if client crashes? - MapReduce - [mail # user]
...The architecture is built around detachable clients. So, no, it doesn't happen automatically. Even if we were to add that feature, it'd be fraught with edge cases - network issues causing ap...
   Author: Vinod Kumar Vavilapalli, 2014-01-13, 16:30
Re: Why none AppMaster node seeks IPCServer on itself. - MapReduce - [mail # user]
...Checked the firewall rules?  +Vinod  On Jan 8, 2014, at 3:22 AM, Saeed Adel Mehraban  wrote:    CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use o...
   Author: Vinod Kumar Vavilapalli, 2014-01-08, 18:28
Re: Ways to manage user accounts on hadoop cluster when using kerberos security - MapReduce - [mail # user]
...On Jan 7, 2014, at 2:55 PM, Manoj Samel  wrote:    That's how I've seen this issue addressed.   +Vinod CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use...
   Author: Vinod Kumar Vavilapalli, 2014-01-08, 18:22
Re: Understanding MapReduce source code : Flush operations - MapReduce - [mail # user]
...What OutputFormat are you using?  Once it reaches OutputFormat (specifically RecordWriter) it all depends on what the RecordWriter does. Are you using some OutputFormat with a RecordWri...
   Author: Vinod Kumar Vavilapalli, 2014-01-07, 05:21
Re: Map succeeds but reduce hangs - MapReduce - [mail # user]
...Check the TaskTracker configuration in mapred-site.xml: mapred.task.tracker.report.address. You may be setting it to or localhost:0. Change it to and restart the daemon...
   Author: Vinod Kumar Vavilapalli, 2014-01-02, 18:28
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