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134 discussions - 558 posts

  • I got the HDFS-265 branch from hdfs and compiled it successfully, and generated hadoop-hdfs-*.jar. But I also need mapreduce. Is there an easy to compile hdfs and mapreduce together? I need HDFS-265 ...
    Zheng ShaoZheng Shao
    Oct 5, 2009 at 10:22 pm
    Oct 5, 2009 at 10:42 pm
  • Hi, I've downloaded Hadoop 0.20.1 and found that the eclipse plugin directory is missing from 'contrib'. It was present in 0.19.2 and 0.18.3. Is there a reason for this? Thanks, Gavin
    Gavin RidgwayGavin Ridgway
    Oct 5, 2009 at 10:24 am
    Oct 5, 2009 at 10:31 am
  • Hi, Sorry for starting a new thread. I'm facing the same problem as Ian, see the quoted mail below. We used 0.15.0 on our lab cluster before. Recently we are considering upgrading to 0.20.x, and ...
    Xiance SI(司宪策)Xiance SI(司宪策)
    Oct 31, 2009 at 5:57 am
    Oct 31, 2009 at 5:57 am
  • I've run into a situation where it would be helpful to set specific configuration variables local to a data/task node. I've got a solution, but I'm curious if there is a best practice around this and ...
    Andy SautinsAndy Sautins
    Oct 30, 2009 at 7:21 pm
    Oct 30, 2009 at 7:21 pm
  • Hey there, Thought you guys would be interested in a new blog article I've posted entitled "HBase vs. Cassandra: NoSQL Battle!". I hope you all enjoy it -- I can always use some feedback! ...
    Bradford StephensBradford Stephens
    Oct 29, 2009 at 8:49 pm
    Oct 29, 2009 at 8:49 pm
  • I am using hadoop 0.19.2, Fedora Eclipse latest version and hadoop plugin available in contrib of Hadoop 0.19.2. I can view DFS fine. Mapred perspective works ok. But program "Run as" Run on Hadoop ...
    Rajiv MRajiv M
    Oct 29, 2009 at 3:12 pm
    Oct 29, 2009 at 3:12 pm
  • In Streaming tasks, how can I output a separate file with the key as the filename, for each line of output, instead of collecting it in a big file? Thanks, Ryan
    Ryan RosarioRyan Rosario
    Oct 28, 2009 at 8:43 pm
    Oct 28, 2009 at 8:43 pm
  • Going back to the issue: http://markmail.org/search/?q=Multinode+cluster+setup+issues#query:Multinode%20cluster%20setup%20issues+page:1+mid:qi45trv4fdfwugwf+state:results And having gone over the ...
    Hassaan KhanHassaan Khan
    Oct 28, 2009 at 8:06 pm
    Oct 28, 2009 at 8:06 pm
  • Hi all, I m trying to get hadoop running on ubuntu and I get this error while trying to format, infact its only a warning and the format is successful according to the trace. But could anybody tell ...
    Prabhu Hari DhanapalPrabhu Hari Dhanapal
    Oct 25, 2009 at 12:05 am
    Oct 25, 2009 at 12:05 am
  • How can I make a datanode read-only ? My guess would be hack the config to set reserved disk space = current free disk space Is there any other way ? Vesion : 0.18.1 -Sagar
    SagarSagar
    Oct 24, 2009 at 11:41 pm
    Oct 24, 2009 at 11:41 pm
  • We have a 6 node cluster where two of the nodes (NN, 2NN) have half the disk space available as the remaining four. As a result these two always have more space used. We run rebalancer occasionally ...
    Mayuran YogarajahMayuran Yogarajah
    Oct 21, 2009 at 11:47 pm
    Oct 21, 2009 at 11:47 pm
  • 2009-10-19 17:54:16,221 INFO org.apache.hadoop.metrics.jvm.JvmMetrics: Initializing JVM Metrics with processName=SHUFFLE, sessionId= 2009-10-19 17:54:17,632 INFO org.apache.hadoop.mapred.ReduceTask: ...
    NikjoshNikjosh
    Oct 21, 2009 at 8:56 am
    Oct 21, 2009 at 8:56 am
  • A few weeks ago I set up the secondary namenode to run on a different machine as follows: - on the NN I put the host of the 2NN server inside the slaves file - on the 2NN I added the following to the ...
    Mayuran YogarajahMayuran Yogarajah
    Oct 21, 2009 at 12:57 am
    Oct 21, 2009 at 12:57 am
  • Hi, My Hadoop job has no reduce tasks. The Mapper creates some very simple Java POJOs which I would like to serialize as the output for the Mapper. These POJO's are to be stored in an Hbase table in ...
    Yz5od2Yz5od2
    Oct 20, 2009 at 1:17 am
    Oct 20, 2009 at 1:17 am
  • hi all, Regarding CompositeInputFormat, my experience is that when giving a directory as an input, the entries from the files in the directory do not join. Entries join as expected when giving each ...
    Brien colwellBrien colwell
    Oct 16, 2009 at 10:14 pm
    Oct 16, 2009 at 10:14 pm
  • Wish you and your family a happy and prosperous Deepavali G Sudha Sadasivam
    Sudha sadhasivamSudha sadhasivam
    Oct 16, 2009 at 9:20 am
    Oct 16, 2009 at 9:20 am
  • Hello, I setup hadoop cluster (1 master 2 slaves). In hdfs-site.xml, I set dfs.replication = 3 When I shutdown one node slave, and then try to put a file into hdfs through master node. The file can't ...
    Budianto LieBudianto Lie
    Oct 16, 2009 at 8:47 am
    Oct 16, 2009 at 8:47 am
  • Hi, I am new to Hadoop so this might be an easy question for someone to help me with. I continually am getting this exception (my code follows below) java.io.IOException: Type mismatch in key from ...
    Yz5od2Yz5od2
    Oct 15, 2009 at 7:39 pm
    Oct 15, 2009 at 7:39 pm
  • I got the following error while running the example sort program (hadoop 0.20) on a brand new Hadoop cluster (using the Cloudera distro). The job seems to have recovered. However I'm wondering if ...
    Patrick AngelesPatrick Angeles
    Oct 15, 2009 at 2:24 pm
    Oct 15, 2009 at 2:24 pm
  • Hello web crawlers! The latest release for HBase-Writer is now available for download: http://code.google.com/p/hbase-writer/ This latest version supports Hbase/Hadoop 0.20.x and has a few changes ...
    Ryan SmithRyan Smith
    Oct 14, 2009 at 6:31 pm
    Oct 14, 2009 at 6:31 pm
  • Hello All- My name is David Moccia and I am with the HR department here at the Gilt Groupe. We are HUGE supporters of the open source community. We currently have contributors that are employed here. ...
    David MocciaDavid Moccia
    Oct 14, 2009 at 1:49 pm
    Oct 14, 2009 at 1:49 pm
  • Hi all, Using hadoop 0.20.1 I am seeing the following on my namenode startup. 2009-10-14 11:09:54,232 INFO org.apache.hadoop.ipc.Server: Error register getProtocolVersion ...
    Tim robertsonTim robertson
    Oct 14, 2009 at 11:51 am
    Oct 14, 2009 at 11:51 am
  • Hello, I am new to hadoop. I have 4 databases with different files in each one of them. Say, images in one, video, documents etc. My task is to develop a web service which accepts the keyword from ...
    ShwitzuShwitzu
    Oct 13, 2009 at 6:45 pm
    Oct 13, 2009 at 6:45 pm
  • Hi all, I have just done a fresh install of hadoop-0.20.1 on a small cluster and can't get it to start up. Could someone please help me diagnose where I might be going wrong? Below are the snippets ...
    Tim robertsonTim robertson
    Oct 13, 2009 at 1:21 pm
    Oct 13, 2009 at 1:21 pm
  • Dear whom it may concern, Hi, I am a novice user of Hadoop and Hadoop On Demand (HOD) system. Currently I am using Hadoop version of 0.20.1 (I also tested with 0.18.3 version) and 4 nodes including a ...
    Jik-Soo KimJik-Soo Kim
    Oct 12, 2009 at 9:55 am
    Oct 12, 2009 at 9:55 am
  • Hi I installed Hadoop 0.20.1 on a CentOS system (with all required pre-requisites, such as JDK 1.6, sshd etc). The stand alone test (as mentioned in the Quick Start guide) worked fine. But when I use ...
    Arijit MukherjeeArijit Mukherjee
    Oct 9, 2009 at 8:22 am
    Oct 9, 2009 at 8:22 am
  • Hi, I tried to run one job in a hadoop grid. Following error occurs while running the job 09/10/05 14:23:20 WARN mapred.JobClient: Error reading task ...
    BinishBinish
    Oct 8, 2009 at 6:42 pm
    Oct 8, 2009 at 6:42 pm
  • I am wondering how to read a block of data in Map. I have a file with a single number on every line and I wish to calculate some statistics. Once the file is divided into blocks and sent to different ...
    Akshaya iyengarAkshaya iyengar
    Oct 7, 2009 at 12:58 am
    Oct 7, 2009 at 12:58 am
  • hi all, What would you consider the state of the art for WebDAV integration with HDFS? I'm having trouble discerning the functionality that aligns with each patch on HDFS-225 ...
    Brien colwellBrien colwell
    Oct 6, 2009 at 6:18 pm
    Oct 6, 2009 at 6:18 pm
  • 'lo all, We're starting a Boston Hadoop Meetup (finally ;-) -- first meeting will be on Wednesday, October 28th, 7 pm, at the HubSpot offices: http://www.meetup.com/bostonhadoop/ (HubSpot is at 1 ...
    Dan MilsteinDan Milstein
    Oct 6, 2009 at 5:01 pm
    Oct 6, 2009 at 5:01 pm
  • Good Day, This is what I do to solve the problem below. I used cygserver to start the tasktracker, instead using the Java Wrapper Service. And now my cluster can work correctly. In your cygwin bash ...
    #YONG YONG CHENG##YONG YONG CHENG#
    Oct 6, 2009 at 1:52 am
    Oct 6, 2009 at 1:52 am
  • Please, check the vacancy: Telefonica is in the process of converting data into information of our customers using modern data analysis platforms to personalize our services. The successful candidate ...
    TelefonicaidTelefonicaid
    Oct 5, 2009 at 2:10 pm
    Oct 5, 2009 at 2:10 pm
  • Hello, I see in the archives that last month somebody had a question along these lines, but there didn't seem to be a real resolution. I am unable to run any processes due to some issue with the task ...
    Ilana HeintzIlana Heintz
    Oct 1, 2009 at 5:24 pm
    Oct 1, 2009 at 5:24 pm
  • Dear all, I'm currently working with hadoop and paradigm map/reduce and I'm having some problems working with the plugin of eclipse. The SW versions which I'm working are: .jdk : jdk1.6.0_16 ...
    Joan ProtasioJoan Protasio
    Oct 1, 2009 at 9:06 am
    Oct 1, 2009 at 9:06 am
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177 users for October 2009

Amandeep Khurana: 22 posts Stas Oskin: 22 posts Jason Venner: 20 posts Tim robertson: 20 posts Todd Lipcon: 19 posts Edward Capriolo: 15 posts Aaron Kimball: 14 posts Amogh Vasekar: 14 posts Mark Kerzner: 13 posts Steve Loughran: 13 posts Brian Bockelman: 12 posts Bogdan M. Maryniuk: 10 posts Sudha sadhasivam: 10 posts Allen Wittenauer: 9 posts Huy Phan: 9 posts Jeff Zhang: 9 posts Eason.Lee: 8 posts Shwitzu: 7 posts Usman Waheed: 7 posts Yibo820217: 7 posts
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