As we've noted before, the open source Hadoop software framework has becom a phenomenon as a way of breaking complicated problems apart, spreading them across many computers, and allowing organiations to glean insight from extremely large data sets.
With configuration, installation, and the use of Hadoop in single-node and also the use in multi-node architectures under your belt, you can now turn to the task of developing applications within the Hadoop infrastructure. This article explores the Hadoop APIs and data flow and demonstrates their use with a simple mapper and reducer application.
Hadoop, the open source Big Data platform, has taken another step forward into the world of business information management (BIM) and analytics through a new partnership between Cloudera and Capgemini.
I am required to hack a single node hadoop "cluster" (cloudera psuedo-distributed) to be able to access it remotely. I have successfully installed hadoop and I have updated the localhost identifiers in the configs to the IP address of the machine. I can run hadoop fs -ls / and all is good. I have created a passphraseless key and I can ssh to the hadoop machine.
Ok, this is the first script I've ever attempted to write so go easy on me. I'm just trying to simple copy a tar.gz file from the directory the script is located to /usr/local/filename.tar.gz The script is run as root so it shouldn't be a permissions issue.
I am trying to set up Hadoop permanently on Amazon EC2. Currently what I am doing is every morning launch EC2 instances and set up Hadoop. Is there any way i can avoid this tedious step? I am looking for an Hadoop image which can be loaded on EC2 and make things easy for me.
How is it possible to make a folder under $HOME accessible to other users? I thought that's the case why we have softlinks but apparently I am missing some bits here. Can someone please shed a light on that?
User Hadoop runs hadoop installaion and that contain bin folder with awailable commands to execute.
[hadoop@A1n1 hadoop-1.0.4]$ ls -al