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hdfs permission unworked in hdfs nfs - Hadoop - [mail # user]
...Hi   I am testing the hadoop nfs within hadoop-2.2.0.   I succeed to mount the hdfs to my /mnt/hadoop : #mount -t nfs -o vers=3,proto=tcp,nolock $mynamenodeIP:/ /mn/hadoop   I...
   Author: YouPeng Yang, 2013-12-12, 03:19
multiusers in hadoop through LDAP - Hadoop - [mail # user]
...Hi    In my cluster ,I want to have multiusers for different purpose.The usual method is to add a user through the OS  on  Hadoop NameNode .   I notice the hadoop al...
   Author: YouPeng Yang, 2013-12-10, 08:06
DefaultResourceCalculator ClassNotFoundException - Hadoop - [mail # user]
...Hi all    It‘s wierd to failed to start my yarn resourcemanager with an exception[1].      I aslo do some google, someone also encountered this problem with no solve...
   Author: YouPeng Yang, 2013-11-15, 09:54
Re: FileNotFoundException When DistributedCache file with YARN - Hadoop - [mail # user]
...Hi    I fixed the problem just add the expression of job.setJar("MyJarName") ,and the job went well.   But I have no idea about the expression  and  the exception. &...
   Author: YouPeng Yang, 2013-05-13, 11:40
DistributedCache does not seem to copy the HDFS files to local - Hadoop - [mail # user]
...Hi All    I want to use the DistributedCache   to  perform replicated join on the map side.   My java code refer to [1][2].   When I run the job,the file that I...
   Author: YouPeng Yang, 2013-05-07, 08:18
[expand - 1 more] - Re: No bulid.xml when to build FUSE - Hadoop - [mail # user]
...Hi Harsh     I have found out the reason and the solutions after I check fuse-dfs source code.So I reply again to close this question.     The reason that error come out ...
   Author: YouPeng Yang, 2013-04-13, 09:29
Re: Increase the number of mappers in PM mode - Hadoop - [mail # user]
...Hi   the docs only have a property   does it matter?    2013/3/14 Zheyi RONG  ...
   Author: YouPeng Yang, 2013-03-14, 15:03
Re: Exception in namenode join - Hadoop - [mail # user]
...Hi  Dhanasekaran     if you have delete the user directory on the HDFS.     please check using this:    hdfs dfs -ls -R  /    (-R maybe -r,i...
   Author: YouPeng Yang, 2013-03-02, 02:17
Re: namenode is failing - Hadoop - [mail # user]
...Hi* *Mohit   Your fsOwner hdfs should have the permission to access to the /mnt/san1/hdfs/cache/hdfs/dfs/name. So please check the permission  of  /mnt/  , and sub-direct...
   Author: YouPeng Yang, 2013-03-02, 02:11
Re: Buiding Hadoop code from source - Hadoop - [mail # user]
...Hi Vikas    I use this link:   http://wiki.apache.org/hadoop/EclipseEnvironment    Things go well,except for the maven part,it needs to download the dependecies from...
   Author: YouPeng Yang, 2013-03-02, 01:58
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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