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32 discussions - 110 posts

  • Hi All, I installed and configured fuse-dfs properly with hadoop-0.20.2 and able to mount the hdfs properly. Now if I try to copy some txt file, then file is getting copied but with 0 bytes i.e. ...
    Stuti AwasthiStuti Awasthi
    Dec 16, 2011 at 6:46 am
    Dec 19, 2011 at 5:47 am
  • Hi, I receive the following error while starting datanode in secure mode of hadoop 0.23 2011-12-14 14:35:48,468 INFO http.HttpServer (HttpServer.java:addGlobalFilter(476)) - Added global filter ...
    Sri ramSri ram
    Dec 13, 2011 at 9:27 am
    Dec 13, 2011 at 12:00 pm
  • Hi, I have hadoop cluster running and have my data inside mongodb database. I already write a java code to query data on mongodb using mongodb-java driver. And right now, I want to use hadoop cluster ...
    Martinus MartinusMartinus Martinus
    Dec 21, 2011 at 3:32 am
    Dec 26, 2011 at 4:15 am
  • Hi, I tried to setup the hadoop-cluster using hadoop-0.20.2 and it seem's to be ok, but when I tried to used another version of hadoop, such as hadoop-0.20.3, when I start-all.sh, it gaves me an ...
    Martinus MartinusMartinus Martinus
    Dec 23, 2011 at 9:29 am
    Dec 23, 2011 at 12:21 pm
  • Hi all guys, in the company we are looking for a solution to browse HDFS via http... is there any existing technology that would allow us doing it? We are open to explore anlso 3rd parties, beter if ...
    Simone TripodiSimone Tripodi
    Dec 6, 2011 at 10:55 am
    Dec 8, 2011 at 4:57 am
  • Hi! I'm facing the problem where datanodes are marked as down due to them being to slow in doing blockreports, which in turn is due to too many blocks per node. I.e. ...
    Erik ForsbergErik Forsberg
    Dec 7, 2011 at 10:43 am
    Dec 7, 2011 at 8:21 pm
  • Hi When we tried to run the hadoop flows we got the following exception for all the tasks and it is failed.error is little bit confusing.I have two data nodes,but both are healthy and nodes are Up ...
    Jayaseelan EJayaseelan E
    Dec 22, 2011 at 6:28 am
    Dec 22, 2011 at 6:43 am
  • Hi Folks! I am have some 40 folders whose size of each folders are aproximately 3GB.I used distcp command to take a copy from HDFS to local machine. But it fails with the following error. ...
    Jayaseelan EJayaseelan E
    Dec 21, 2011 at 6:51 am
    Dec 21, 2011 at 11:54 am
  • Hi. Sorry for my ignorance or if I missed the answer to this question in the docs. Does HDFS NFS mount balance the load like it would for regular usage from within a hadoop cluster? It splits up the ...
    Mark HedgesMark Hedges
    Dec 17, 2011 at 12:08 am
    Dec 17, 2011 at 9:22 am
  • Hello, this mail originated as a question, in the meantime I found the solution, so it might help someone hopefully. If you want to build fuse-dfs on 0,23 snapshot branch, on ubuntu linux 11.10 ...
    Petru DimulescuPetru Dimulescu
    Dec 9, 2011 at 4:05 pm
    Dec 16, 2011 at 10:03 pm
  • Hi all, I have some troubles accessing HDFS via PHP. Unfortunately I haven't found a tutorial on how to do it. So I will describe my setup and my steps briefly. I am using hadoop version 0.20.203 on ...
    Otto RossbachOtto Rossbach
    Dec 22, 2011 at 2:20 pm
    Dec 23, 2011 at 6:15 am
  • Hi, I am trying to form a hadoop cluster of 0.23 version in secure mode. While starting nodemanager i get the following error 2011-12-12 15:37:26,874 INFO ipc.HadoopYarnRPC ...
    Sri ramSri ram
    Dec 12, 2011 at 10:15 am
    Dec 13, 2011 at 3:58 am
  • Is there any specific combination of Hadoop and Hbase in order to use Hbase in atleast pseudo distributed mode???I am trying with Hadoop-0.20.205.0 and Hbase-0.90.4 but I am not able to set a pseudo ...
    Mohammad TariqMohammad Tariq
    Dec 9, 2011 at 9:59 am
    Dec 9, 2011 at 5:15 pm
  • Hi, In my application, I have some big c++ codes. And now I want to store files in HDFS, and use the c++ programs to read/write from/to HDFS. I wonder what's the best way(efficient,high throughput) ...
    臧冬松臧冬松
    Dec 23, 2011 at 9:48 am
    Dec 27, 2011 at 8:07 am
  • After reading documentation in http://hadoop.apache.org/common/docs/r0.20.2/cluster_setup.html, I need example to each parameter value at hdfs-site.xml and mapred-site.xml to be clearer. What are ...
    Mohamed ElsayedMohamed Elsayed
    Dec 25, 2011 at 2:06 pm
    Dec 27, 2011 at 3:03 am
  • Hi, Apologies for cross-posting. We're in the process of migrating data from an Apache Hadoop 0.20.203.0 cluster to a 0.22.0 cluster using distcp with a hftp source and hdfs dest as described in the ...
    Markus JelsmaMarkus Jelsma
    Dec 19, 2011 at 8:24 am
    Dec 19, 2011 at 12:30 pm
  • Hello, when I try to do bin/hadoop fs -put conf input I obtain: put: org.apache.hadoop.security.AccessControlException: Permission denied: user=santoni, access=WRITE, ...
    Andrea Valentini AlbanelliAndrea Valentini Albanelli
    Dec 14, 2011 at 3:27 pm
    Dec 14, 2011 at 3:48 pm
  • Sorry for the layman question. Whats the best way of writing data into HDFS from outside of the cluster. My customer is looking for wire speed data ingest into HDFS. We are considering flume, but ...
    Steve EdSteve Ed
    Dec 13, 2011 at 9:33 pm
    Dec 13, 2011 at 9:58 pm
  • Sorry, in the last email I write the object of the email "Info and problem about Hadoop on Demand", but I mean "Info and problem about Hadoop" Hello, I've got this problem when I try to do ...
    Andrea Valentini AlbanelliAndrea Valentini Albanelli
    Dec 9, 2011 at 3:34 pm
    Dec 9, 2011 at 3:47 pm
  • Hello, I've got a question about Hadoop On Demand and HDFS/MapReduce. I've understand that MapReduce splits the input data-set into independent chunks and that HDFS store the data over the cluster. ...
    Andrea Valentini AlbanelliAndrea Valentini Albanelli
    Dec 7, 2011 at 3:53 pm
    Dec 9, 2011 at 3:32 pm
  • This is on a EMR cluster. This does not work! hadoop@ip-10-34-7-51:~$ hadoop dfs -mkdir hdfs://10.34.7.51:9000/user/foobar mkdir: This file system object (hdfs://ip-10-34-7-51.ec2.internal:9000) does ...
    Ayon SinhaAyon Sinha
    Dec 6, 2011 at 5:30 am
    Dec 6, 2011 at 12:47 pm
  • Hi, Has anyone ported libhdfs to windows platform? If yes how was the experience? Thanks, Mehul
    Mehul ChoubeMehul Choube
    Dec 5, 2011 at 11:24 pm
    Dec 6, 2011 at 3:44 am
  • Hi, I have HDFS cluster with 4 nodes: 2 master nodes (name0, name1) and 2 slave nodes (data0, data1). Hadoop 0.23 is used. Cluster OS is Ubuntu 10.04 Lucid. On name0 I bootstrap NameNode, on data0 ...
    Andrey ZhuchkovAndrey Zhuchkov
    Dec 29, 2011 at 12:56 pm
    Dec 29, 2011 at 12:56 pm
  • Hi When we tried to run the hadoop flows we got the following exception for all the tasks and it is failed.error is little bit confusing.I have two data nodes,but both are healthy and nodes are Up ...
    Jayaseelan EJayaseelan E
    Dec 22, 2011 at 6:27 am
    Dec 22, 2011 at 6:27 am
  • Hello,  Ubuntu is currently pulling the sun java plugin from ubuntu, and will be pulling all sun java packages from partner archives, replacing the current packages with empty ones. They have ...
    Stuart SmithStuart Smith
    Dec 19, 2011 at 9:34 am
    Dec 19, 2011 at 9:34 am
  • Yes you can use utility methods from IOUtils ex: FileOutputStream fo = new FileOutputStream (file); IOUtils.copyBytes(fs.open(fileName), fo, 1024, true); here fs is DFS stream. other option is, you ...
    Uma Maheswara Rao GUma Maheswara Rao G
    Dec 16, 2011 at 4:52 pm
    Dec 16, 2011 at 4:52 pm
  • Hi. I was thinking about how HDFS could be useful on a big cluster running a traditional grid scheduler, in which users run arbitrary open-source and commercial applications under some license ...
    Mark HedgesMark Hedges
    Dec 15, 2011 at 7:02 pm
    Dec 15, 2011 at 7:02 pm
  • Hi, Can anyone give the procedure about how to run Distibuted shell example in hadoop yarn.So that i try to understand how applicatin master really works.
    Sri ramSri ram
    Dec 14, 2011 at 9:07 am
    Dec 14, 2011 at 9:07 am
  • HI, I TRIED INSTALLING HADOOP SECURE MODE IN 0.23 VERSION.I STUCK UP WITH THE ERROR OF java.lang.RuntimeException: Cannot start secure cluster without privileged resources. at ...
    Sri ramSri ram
    Dec 12, 2011 at 7:56 am
    Dec 12, 2011 at 7:56 am
  • New post on *Fremontconsultingjobs* <http://fremontconsultingjobs.wordpress.com/author/fremontconsultingjobs/ Director of Engineering: Analytics New York City, NY – Social E-Commerce, 150k ...
    Molly McClureMolly McClure
    Dec 11, 2011 at 5:01 am
    Dec 11, 2011 at 5:01 am
  • People, i have a symLink something like test_current in HDFS. When i open this file it has the name of the actual file being pointed to. I am looking for a JAVA api wherein i can get the target file ...
    Inder PallInder Pall
    Dec 5, 2011 at 7:18 am
    Dec 5, 2011 at 7:18 am
  • Hi all, When we set the hadoop configuration, we specify a storage directory path. Once we start running the cluster, we see some directories getting created inside that specified path. Current, ...
    Kartheek muthyalaKartheek muthyala
    Dec 1, 2011 at 5:31 pm
    Dec 1, 2011 at 5:31 pm
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37 users for December 2011

Stuti Awasthi: 15 posts Alo alt: 10 posts Sri ram: 9 posts Harsh J: 7 posts Martinus Martinus: 6 posts Jayaseelan E: 5 posts Andrea Valentini Albanelli: 4 posts Joey Echeverria: 4 posts Kartheek muthyala: 3 posts Mohammad Tariq: 3 posts Petru Dimulescu: 3 posts Praveen Sripati: 3 posts Uma Maheswara Rao G: 3 posts Aastha Mehta: 2 posts Arun C Murthy: 2 posts Ayon Sinha: 2 posts Charles Earl: 2 posts Erik Forsberg: 2 posts Jeffrey Buell: 2 posts Mark Hedges: 2 posts
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