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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
[expand - 1 more] - 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
[expand - 1 more] - 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
Is there any design document for YARN - Hadoop - [mail # user]
...Hi ,  I am reading the yarn code, so wondering whether there's any design document for the yarn. I found the blog post on hortonworks is very useful. But more details document would be ...
   Author: Jeff Zhang, 2013-11-26, 05:34
Re: hadoop File loading - Hadoop - [mail # user]
...It will work as long as you consider the xml tag boundary in your RecordReader.  On Tue, Nov 22, 2011 at 9:20 AM, hari708  wrote:    Best Regards  Jeff Zhang...
   Author: Jeff Zhang, 2011-11-22, 08:20
[expand - 2 more] - Re: Can not access hadoop cluster from outside - Hadoop - [mail # user]
...I find the reason. This is because I use different version of hadoop between server side and client. Seems CDH is not compatible with apache release version   On Fri, Jun 3, 2011 at 1:1...
   Author: Jeff Zhang, 2011-06-03, 01:13
[expand - 3 more] - Re: Is there any way to add jar when invoking hadoop command - Hadoop - [mail # user]
...Thanks, it works   On Wed, Mar 23, 2011 at 10:04 AM, James Seigel  wrote:    Best Regards  Jeff Zhang...
   Author: Jeff Zhang, 2011-03-23, 02:37
Re: how to perform dfs -ls as a request from www - Hadoop - [mail # user]
...If you are using Java Servlet, then you can use HDFS Java API directly.   Use FileSystem.listStatus instead of call shell, and put core-site.xml hdfs-site.xml on your classpath.  I...
   Author: Jeff Zhang, 2010-11-12, 02:30
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB