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128 discussions - 445 posts

  • Dear All, I have installed *Hadoop-fuse* to mount the HDFS filesystem locally . I could mount the HDFS without any issues.But I am not able to do any file operations like *delete, copy, move* etc ...
    Manu SManu S
    Apr 26, 2012 at 10:50 am
    May 20, 2014 at 4:43 am
  • I can only run Hadoop shell commands as "hdfs" user. Running "hadoop fs -mkdir input" as root (or any other user) produces a RuntimeException. I am running CDH4b2; I followed the installation ...
    Apr 30, 2012 at 12:48 pm
    May 11, 2012 at 6:39 pm
  • Some questions about Flume-NG - we just installed the one that comes with CDH4 Beta 2: 1) There is no "flume master" command in Flume-NG. How is the Master started? At the start of the first agent? ...
    Sam RobertsSam Roberts
    Apr 26, 2012 at 1:44 am
    Apr 30, 2012 at 6:50 pm
  • I am getting below error while creating table thru Hbase shell. ERROR: org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException: org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException: Timed out ...
    Devang GandhiDevang Gandhi
    Apr 8, 2012 at 3:20 am
    Apr 8, 2012 at 7:07 am
  • I Am using cloudera-manager free installation I am getting this error on one of my slave node Supervisor returned FATAL: at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java ...
    Vaddi ramuVaddi ramu
    Apr 18, 2012 at 2:51 pm
    Oct 22, 2013 at 5:43 am
  • Hi, I had a distributed CDH4b1 cluster running and working well. I recently wanted to add a CheckpointNode, so I attempted to have the NameNode share a NFS with the CheckpointNode. After I had ...
    Apr 23, 2012 at 4:58 pm
    May 27, 2013 at 12:22 pm
  • Hi All, Is there a way to delete rows from RDBMS using Sqoop? If not, are there any workarounds. Thanks, Nitin
    Apr 30, 2012 at 6:48 pm
    May 1, 2012 at 9:09 pm
  • Hi, This issue is already here :https://github.com/cloudera/hue/issues/7 But I can't find any solution to it. I am using Oracle Enterprise Linux. Please reply if you have any idea what's going on ...
    Apr 10, 2012 at 12:04 pm
    Apr 13, 2012 at 6:02 am
  • Hi All, I have a use case in which I need a distributed lookup table(like a HashMap). The table can be in order of millions of records but is not used very frequently. What is the best way to ...
    Apr 12, 2012 at 3:41 pm
    Apr 16, 2012 at 2:22 pm
  • Hi, When I run the examples, or for that matter if I run any job: I get the following error: " Application application_1334730937663_0001 failed 1 times due to AM Container for ...
    Apr 18, 2012 at 7:12 am
    Apr 23, 2012 at 10:56 pm
  • I wrote a Python script that takes a Hadoop log file ( in the default format) and spits out some relevant information. Here is a sample output. I find it useful to do an offline analysis of log ...
    Raj VishwanathanRaj Vishwanathan
    Apr 3, 2012 at 5:46 pm
    Apr 9, 2012 at 4:02 pm
  • Hi, I am attempting to install CDH4 Beta 1 on Fedora Linux 16 using the following command (based in CDH4_Installation_Guide_b1.pdf page 6, cf ...
    Jong Hang SiongJong Hang Siong
    Apr 9, 2012 at 2:47 am
    Nov 23, 2012 at 2:08 pm
  • I'm trying to run the distributedshell YARN example on a single CentOS 5.2 machine. MR jobs run fine, but when I try to run the distributedshell example the launched container fails. I'm launching a ...
    Apr 27, 2012 at 6:03 pm
    Apr 30, 2012 at 6:12 pm
  • Could anyone please help me configure httpfs so that it connects to NN rather than file:///. [ec2-user@ip-10-118-253-70 ~]$ grep -A2 -B1 httpfs.hadoop.hdfs.configuration.dir ...
    V vV v
    Apr 30, 2012 at 3:47 pm
    Apr 30, 2012 at 5:39 pm
  • Hi all. A newbie question. I have Cloudera Manager free edition installed. I have 1 extra VM running somewhere that I'd like to include in the cluster. My question is, I will have to install all the ...
    Le DudeLe Dude
    Apr 18, 2012 at 5:11 pm
    Apr 18, 2012 at 7:46 pm
  • My apologies if this is the wrong place to submit this question: I'm having trouble installing Cloudera CDH Free Edition on CentOS 5.4 I followed the guide, and logged-in to the webserver to complete ...
    Tim WernickeTim Wernicke
    Apr 26, 2012 at 9:51 pm
    Apr 29, 2012 at 1:00 pm
  • Hi, I am currently testing the performance of Apache Hadoop in a 9 node cluster with each node having 4Gig RAM plus 2 cores (Master 16Gb/ 8cores) and determined that when submitting a single job the ...
    Jonas KressJonas Kress
    Apr 23, 2012 at 3:04 pm
    Apr 26, 2012 at 7:09 pm
  • I have an ETL job that runs every 30 minutes and loads web logs from 60+ servers. I have a requirement to store the earliest entry date and the latest entry date into a MySQL database once the job ...
    Dave ShineDave Shine
    Apr 19, 2012 at 12:47 pm
    Apr 19, 2012 at 3:06 pm
  • I am a newbie to Unix/Hadoop and have basic questions about CDH3 setup. I installed CDH3 on Ubuntu 11.0 Unix box. I want to setup a sudo cluster where I can run my pig jobs under mapreduce mode. How ...
    Shan sShan s
    Apr 16, 2012 at 5:39 am
    Apr 18, 2012 at 2:25 pm
  • Hi All, I was trying to find out the best options to get data out of HDFS to other platforms like AIX with parameters like reliability, performance and parallelism and data integrity in mind. Thanks, ...
    Mapred LearnMapred Learn
    Apr 13, 2012 at 3:29 pm
    Apr 16, 2012 at 5:48 pm
  • I have hive remote metastore thrift server setup (CDH3u3) with kerberos and authentication turned on. I'm getting an error when creating a table from the hive cli: === hive create database testing ...
    Apr 11, 2012 at 8:34 pm
    Apr 12, 2012 at 2:06 am
  • if i want to allow only a subset of hosts to submit jobs to oozie can i use something like oozielaunchers*.example.com in hadoop.proxyuser.oozie.hosts so that in future i can add any number of ...
    Jabir AhmedJabir Ahmed
    Apr 6, 2012 at 6:24 pm
    Apr 6, 2012 at 8:33 pm
  • Hello, I am starting to use YARN with CDH4b1 and I am having some trouble getting the MapReduce jobs working across the cluster. I am able to get to the ResourceManager web UI so I know that is ...
    Apr 9, 2012 at 4:41 pm
    May 2, 2013 at 1:14 pm
  • hi, i got an error when execute sqoop, below are error generated by sqoop java.io.IOException: com.teradata.jdbc.jdbc_4.util.JDBCException: [Teradata JDBC Driver] [TeraJDBC] [Error 1151] ...
    Apr 19, 2012 at 11:05 am
    Jul 17, 2012 at 4:02 am
  • Hi, it's possible to use a private image with whirr?
    Håvard Wahl KongsgårdHåvard Wahl Kongsgård
    Apr 21, 2012 at 10:13 am
    Apr 30, 2012 at 11:20 am
  • Hi, I am a bit new user of Hadoop and Linux. I have been following the installation guide of CDH3 on the Cloudera website. After installing hadoop, I tried running an example job and this error came ...
    Heba KhattabHeba Khattab
    Apr 27, 2012 at 6:27 pm
    Apr 27, 2012 at 9:30 pm
  • I am getting the following error in NN when secondary NN tries to transfer Image (error from SNN is pasted in the end) LOG FROM NN ******************* 2012-04-27 08:54:05,990 INFO ...
    V vV v
    Apr 27, 2012 at 9:30 am
    Apr 27, 2012 at 1:03 pm
  • Is CDH4 Beta2 out ?
    Senthilvel RangaswamySenthilvel Rangaswamy
    Apr 23, 2012 at 6:39 pm
    Apr 24, 2012 at 6:29 pm
  • Hello, I'm getting ready to deploy HA into my cluster that is running CDH4. Just to be clear from the documentation I read, both NameNodes need to be formatted with the same clusterID? So I have to ...
    Apr 24, 2012 at 5:16 pm
    Apr 24, 2012 at 6:12 pm
  • Hi For CDH3u3 where do I put fs.checkpoint.dir configuration parameter - core-site.xml or hdfs-site.xml? So far I got different stories from different sources. Thanks in advance.
    Apr 23, 2012 at 5:37 pm
    Apr 23, 2012 at 6:59 pm
  • Has anyone else noticed a high CPU 'nice' usage for jobs that use the streaming interface? We're seeing almost pure nice usage in Ganglia graphs for this use-case. Basically a Pig script reads a line ...
    Charles BakerCharles Baker
    Apr 12, 2012 at 10:50 pm
    Apr 19, 2012 at 10:08 pm
  • We recently had an electrician short out a circuit which in turn killed power on a redundant power leg for a whole row of racks. We were saved (mostly) by having redundant power supplies on that row ...
    Apr 18, 2012 at 6:16 pm
    Apr 19, 2012 at 4:11 pm
  • Hi, I am getting following error on a simple Hive join query. I am working on a 4 node cluster with 4 GB RAM each. One of the slaves goes down during the query. Is it because of insufficient heap ...
    Apr 17, 2012 at 10:03 pm
    Apr 19, 2012 at 6:13 am
  • Hi Guys, I need to handle asterisk (*) in my UDF(I need all the columns in a row) like "count(*)". Please let me know if it can and how it can be handled. Basically i need to concatenate all columns ...
    Apr 16, 2012 at 6:28 pm
    Apr 17, 2012 at 1:47 pm
  • To Mailing-List. I was trying to implement the fair scheduler in my hadoop cluster. Could you please let me know the best place to find the all the configurations for fair scheduler. Like assigning ...
    James GeorgeJames George
    Apr 16, 2012 at 4:13 pm
    Apr 16, 2012 at 9:24 pm
  • Hello, I have a 7-node cluster setup in distributed mode with 1 master running the NameNode and HMaster services, 1 secondary NameNode running the SecondayNameNode service, and 5 nodes running the ...
    Apr 9, 2012 at 12:32 pm
    Apr 10, 2012 at 12:20 pm
  • I use the couldera tar balls on our test cluster (CentOS 5.x), it works great other than the included native libs don't work. No real problem as I just build the native libraries following the ...
    Chris TarnasChris Tarnas
    Apr 9, 2012 at 6:54 pm
    Apr 9, 2012 at 8:38 pm
  • Please help me, oh great mailing list! We've been dealing with a strange problem in our small CDH3 cluster deployed in Amazon EC2. Yes, I know EC2 is a strange beast unto itself, but we're seeing ...
    Kemper, StephanKemper, Stephan
    Apr 2, 2012 at 9:42 pm
    Apr 3, 2012 at 9:06 pm
  • Hi, I've been trying to get Oozie to work with Hive to no avail. Here is the error from the oozie log output and everything else. Sorry for the spam. 2012-04-03 11:52:55,014 DEBUG ...
    Apr 3, 2012 at 5:13 pm
    Apr 3, 2012 at 6:46 pm
  • i have setup a pseudo hadoop cluster, now i have an oozie server setup in different box. Now the documentation doesn't say how can i make oozie aware of my hadoop installation. The documentation i am ...
    V vV v
    Apr 25, 2012 at 9:12 pm
    Apr 26, 2012 at 3:56 pm
  • Hello, We have a Hadoop cluster running on EC2 with Cloudera's hadoop-0.20.2-cdh3u2 distribution. We are now ready to install HBase on it. Trying to figure out what's the best way to accomplish ...
    Something SomethingSomething Something
    Apr 26, 2012 at 5:12 am
    Apr 26, 2012 at 2:06 pm
  • Hi, I have been struggling to get cdh4b1 to run on a 32 bit machine running Oracle Linux 6. Will jobs run on 32 bit machines? Thanks, Austin
    Apr 23, 2012 at 10:54 am
    Apr 24, 2012 at 7:43 pm
  • Hi all, I am trying to execute sqoop action nodes running sqoop import to HBase in parallel. The job starts well and sqoop action nodes start executing in parallel but they never stop. After minutes ...
    Apr 19, 2012 at 12:59 pm
    Apr 19, 2012 at 3:28 pm
  • Hi all. I'm new with this Hadoop stuffs so I thought I give it a try by using supposedly an easier version of installation mechanism provided in Cloudera Manager free edition. I have successfully ...
    Le DudeLe Dude
    Apr 18, 2012 at 1:00 am
    Apr 18, 2012 at 6:23 pm
  • Hi, I've had a hard time finding information on loading xml data into a hive table. CSV and TSV are straightforward, but for XML it looks you either need to write some custom SerDe, convert XML to ...
    Rakesh Neelavar RaoRakesh Neelavar Rao
    Apr 17, 2012 at 3:51 pm
    Apr 17, 2012 at 7:08 pm
  • Hi, We are researching the usage of HBASE (cdh3u3) for the processing of data. Can any one give an hardware requirement indication? Data description in current RDBMS: 80 colomns Avg. record size: 523 ...
    Jan-Pieter GaastraJan-Pieter Gaastra
    Apr 17, 2012 at 10:02 am
    Apr 17, 2012 at 1:30 pm
  • I have cluster (hdfs://productioncluster:9000/) which have 1 NN + 1 SNN + 32 DN Now I have *another 3 (A, B, C) servers* , on which I want to deploy HBase , so I install zookeeper on the three ...
    Apr 16, 2012 at 6:17 am
    Apr 16, 2012 at 7:25 am
  • i am doing some unit tests using MiniDFSCLuster and MiniMRCluster. i pull in all my dependencies from maven and this works well. except i use snappy compression and i get errors like this ...
    Apr 12, 2012 at 7:25 pm
    Apr 12, 2012 at 8:31 pm
  • Hello, Can anyone share experience of selecting hardware configuration for a Hadoop Cluster? As legends tell us about Google, they used inexpensive commodity hardware. So, Hadoop must be run also on ...
    Antonio RodrigesAntonio Rodriges
    Apr 4, 2012 at 7:32 pm
    Apr 6, 2012 at 10:33 am
  • I have coma delimited csv file when i am creating table using this file in hive, i am getting below error. Failed to open file '/user/manish/minfo.csv': Could not read block Block(genStamp=1094, ...
    Manish BhogeManish Bhoge
    Apr 5, 2012 at 7:48 pm
    Apr 5, 2012 at 9:15 pm
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126 users for April 2012

Kevin: 32 posts Harsh J: 31 posts Austin: 16 posts Alejandro Abdelnur: 14 posts Nitin: 12 posts Air: 11 posts Patrick Angeles: 11 posts Ahmed Radwan: 10 posts Todd Lipcon: 10 posts Dave Shine: 9 posts Le Dude: 9 posts V v: 9 posts Eli Collins: 8 posts Raj Vishwanathan: 8 posts Charles Baker: 7 posts Jabir Ahmed: 7 posts Amandeep Khurana: 6 posts Newa: 6 posts Praveenesh: 6 posts Sam Roberts: 6 posts
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