Install Hadoop plug-ins in eclipse, and manage and develop Hadoop synchronously. Hadoop is a powerful parallel software development framework, which allows tasks to be processed in parallel on a distributed cluster, thus improving the execution efficiency.
However, it also has some disadvantages, such as the difficulty of coding and debugging Hadoop program, which directly leads to the high threshold for developers to get started and the development is difficult. Therefore, in order to reduce the difficulty of Hadoop, the developers of Hadoop have developed the Hadoop Eclipse Plug-in, which can be directly embedded into the Hadoop development environment, thus realizing the graphical interface of the development environment and reducing the difficulty of programming.
For building eclipse-plugin for hadoop No changes are needed for hadoop Changes will be needed accordingly only if we needed to generate plugin for other versions. Download hadoop source code from svn or git.
Using git latest version of hadoop can be downloaded with below command. Change directory cd to hadoop-common folder and submit below command from terminal to build maven hadoop project. Import the above project into Eclipse:. The generated sources as above may show up some errors due to the java files that are generated from protoc.
As discussed above, choosing the option 1 for creation of hadoop eclipse plugin will be easier than resolving the errors in option 2. So, we preferred using option 1 to create hadoop-eclipse-plugin Your email address will not be published. Hi, I have compiled this for hadoop 2. However, not able to add any locations to it. The behaviour is same with eclipse Luna. Can you please let me know how did you get your hadoop-eclipse plugin, whether you have created as shown in Option 1 of the post or you get it from anywhere on the net.
Because there will be version inconsistencies if you try to use the different versions hadoop and its eclips plugin. Especially check org. Yes, it has miscellaneous behaviour while adding DFS locations to it and even adding DFS locations to eclipse is not always preferred. So, Eclipse is better for coding and building jars at one place and then finally copying our jar file into datanode from which we will plan to submit the job.
The master is responsible for scheduling of the jobs component tasks on the slaves and monitoring them, and also re-executing the failed tasks and the slaves execute the tasks as instructed by the master. Detailed Description. Install Java1. Install Eclipse Europa 3. Install Cygwin in Desktop openssi and openssh packages. Both these packages are must for the proper functioning of hadoop cluster and also eclipse plug-in.
Both Hadoop scripts and also eclipse plug-in need passwordless ssh to operate. For configuring the SSH daemon, open Cygwin command prompt and execute the ssh-host-config command and follow the given options. Once the service is started, open the Cygwin command prompt and execute the set of commands mentioned below for setting up authorization keys.
Frequently asked Hadoop Interview Questions.
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