Ubuntu updating

As the computer starts, GRUB 2 either presents a menu and awaits user input or automatically transfers control to an operating system kernel.GRUB 2 is a descendant of GRUB (GRand Unified Bootloader). Grub version 1.99 became the default on Ubuntu 11.04 (Natty Narwhal) and introduced some major changes in the Grub file contents.If this happens the Windows feature must be re-enabled.Instructions for enabling the Windows Subsystem for Linux can be found in the Installation Guide.WSL install will try to automatically change the Ubuntu locale to match the locale of your Windows install.

The main goal of tutorial is to get a more sophisticated Hadoop installation up and running, namely building a multi-node cluster using two Ubuntu boxes.

It has been completely rewritten to provide the user significantly increased flexibility and performance. This guide covers the use of Grub 1.98, the Grub release found in Ubuntu 10.04 LTS (Lucid Lynx).

and Grub 1.99, packaged with Ubuntu 12.04 LTS (Precise Pangolin).

Just keep in mind when setting up the single-node clusters that we will later connect and “merge” the two machines, so pick reasonable network settings etc. Now that you have two single-node clusters up and running, we will modify the Hadoop configuration to make one Ubuntu box the “master” (which will also act as a slave) and the other Ubuntu box a “slave”.

Note: We will call the designated master machine just the “master“ from now on and the slave-only machine the “slave“.

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