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Re: SIMPLE authentication is not enabled. Available:[TOKEN] - Hadoop - [mail # user]
...Here's my sample for your reference  ( If you are running unmanaged AM inclient side):1.  set token in UserGroupInformation2.  do the registration in the way of UserGroupInfor...
   Author: Jeff Zhang, 2014-03-16, 12:45
Re: Using resource manager as standalone component from hadoop yarn - Hadoop - [mail # user]
...You can start the resource manager without starting any node manager.  Andthe source code of resource manager and node manager are in different subpom project.On Wed, Mar 12, 2014 at 7:...
   Author: Jeff Zhang, 2014-03-12, 00:44
Re: Impact of Tez/Spark to MapReduce - Hadoop - [mail # user]
...I believe in the future the spark functional style api will dominate thebig data world. Very few people will use the native mapreduce API. Even nowusually users use third-party mapreduce lib...
   Author: Jeff Zhang, 2014-03-06, 01:48
Re: Question on the UnManaged-AM-Launcher - Hadoop - [mail # user]
...I guess I got the answer , the reason is that we need to pass theenvironment to AM, and there's no way to pass that to thread, but it ispossible for process.  Could anyone confirm that ...
   Author: Jeff Zhang, 2014-02-26, 09:36
Re: Logic of isSplittable() of class FileInputFormat - Hadoop - [mail # user]
...Hi Sugandha,Take gz file as an example, It is not splittable because of the compressionalgorithm it is used.  It can not guarantee that one record is located inone block, if one record ...
   Author: Jeff Zhang, 2014-02-26, 08:37
Unmanaged application issue on YARN - Hadoop - [mail # user]
...Hi all,I build an ummanaged application and submit it to yarn ( hadoop 2.2). Butencounter the following exception:Caused by:org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.A...
   Author: Jeff Zhang, 2014-02-26, 05:38
Re: question about hadoop dfs - Hadoop - [mail # user]
...you can use the fsck command to find the block locations, here's one examplehadoop fsck /user/hadoop/graph_data.txt -blocks -locations -filesOn Sun, Jan 26, 2014 at 2:48 PM, EdwardKing  ...
   Author: Jeff Zhang, 2014-01-28, 02:10
Re: [YARN] TestDistributedShell failed in eclipse but successful in maven - Hadoop - [mail # user]
...Thanks, Vinod. It works.  Could you point me which part needs the JAVA_HOME env ?   On Thu, Jan 23, 2014 at 2:17 AM, Vinod Kumar Vavilapalli  wrote:  ...
   Author: Jeff Zhang, 2014-01-23, 01:23
Re: issue about total input byte of MR job - Hadoop - [mail # user]
...It depend on your input data.  E.g. your input consists of 10 files, each is 65M, then each file will take 2 mappers, overall it would cost 20 mappers, but the input size is actually 65...
   Author: Jeff Zhang, 2013-12-03, 08:41
Re: How can I remote debug application master - Hadoop - [mail # user]
...Thanks for the tips   On Tue, Nov 26, 2013 at 6:17 PM, Harsh J  wrote:  ...
   Author: Jeff Zhang, 2013-11-27, 01:30
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