Installing JDK and JRE for Hadoop

in this video we are going to discuss

installing JDK and JRE for Hadoop we

shall mention all the steps one by one

for your understanding and also this

video will be assisted with one

practical demonstration for your easy

working so let us start with this

installation process so to download JDK

please follow the link so here the link

is given accept the License Agreement

option and then go for the Linux 64-bit

version and ending with dot dot G Jade

so this particular file is to be

selected so you can see after going to

this particular link this page will come

up we shall go for the accept license

agreement then you shall select this

respective version because it is Linux

x64 and tar dot G Jade should be the

extension of the file how to download

GRE on Linux so in the previous one we

download it only the JDK but we are now

supposed to download that JRE so now we

are going for this respective link this

page will come up accept license

agreement is to be selected so accept

the License Agreement and go to the

Linux x64 g.o.d download ending with the

filename ending with the extension ta r

dot G Jade so we have selected this one

because it is Linux x64 version open up

the terminal by pressing ctrl alt T in

the open - just press ctrl alt and T the

terminal will get open

create a Java folder at slash user slash

local using root permission so it will

ask for the password for the ubuntu root

system and now the command will be sudo

mkdir - P slash user slash local slash

Java so this folder is to be created now

copy and paste the downloaded JDK and

JRE dot dot G jet from the download

location that is a download folder to

the newly created Java directory so the

default folder will be download but also

you can download it in some other folder

so from that very particular folder to

the newly created Java directory this

files are to be transferred there so now

copy and paste the downloaded JDK and

JRE both the two files with the

extension dot dot G Jade into the

current directory so how to do that one

so if you if you go to the download

folder so CD download and then sudo CP

minus sir this is a respective file name

and this is a respective destination

folder and similarly we are going to do

the same for the JDK also now go to the

Java folder and enter that JDK and JRE

files so for that you are supposed to go

to that folder so cds slash user slash

local slash Java then sudo tar X V Z F

that is our GD K star dot dot dot digit

and similarly we are doing the same for

the GRE file also just this comments are

to be executed one by one now go to the

slash it is a slash profile and edit the

profile using the lines mentioned below

so how to open that file which will be

going for sudo that is a G edit that is

the editor and then slash it is C slash

profile is the file name slash it is C

is the path so now write this lines into

the profile document so these are the

lines are to be written in the profile

document say at the last you are putting

all these lines mention maintaining the

lowercase and uppercase letters so you

can pause the video and you can write

all these lines onto the slash EDC slash

profile file now write these lines onto

the terminal one by one so these are the

lines are to be retained onto the

terminal that is you are coming out from

this G edit software after saving it

obviously and then you are going to

write this lines onto the terminal

prompt now write this lines onto the

terminal one by one so these are the

separates more lines are there they are

to be typed in this order and

maintaining this syntax if you are using

the same Java version the

given lines will work fine for the

different versions in need to edit the

version details in the lines so here you

can find here we are using this Jo e 1.8

dot 0 underscore 1 7 1 so this version

was comfortable in my system but if you

are using some new or other Java

versions or gianni versions the versions

are to be are to be updated accordingly

and just you just go to this user local

Java folder you will be getting that

respective folders are there and

accordingly that commands are to be

changed here now refresh the profile to

take up the changes whatever we have

done so now let us run the profile file

so that the changes whatever you did in

the profile file should get reflected

onto the system so to do that one we are

going for dot slash etc' slash profile

then please reboot your system so reboot

option will be there just go for the

rebooting of your system to check

whether the Java is installed correctly

or not on your system paste the command

in your terminal and if it returns the

Java version then Java is installed

correctly so now you can type this

command so there is a Java - version now

if we see that outputs are coming that

means that your Java has got loaded

successfully on your system so you see

we are going for this reboot and then

after coming up on opening one terminal

we can go for this we can go for this

writing this Java - version if the Java

version is coming correctly that means

your Java has got loaded successfully so

now let us go for one practical

demonstration to give you the idea that

how the things are taking place and will

be following all the steps as we have

mentioned here one by one for your

better understanding so here is the

demonstration for you in this video we

are going to install JDK and JRE so at

first we are going to copy the part of

the JDK and also add having the path for

the JRE link you can find that we are

having the path for JDK we are having

the path for GRE so these two parts we

are going to copy and we are going to

paste onto the browser for the

downloading and then we shall create one

directory under user local so the direct

animal be Java then we shall do the rest

operation so let me go for the copy of

this JDK download link going for this

space then go accept license and

selecting the Linna 64 so these are file

you are going to download save and okay

so now it is getting downloaded onto my

download folder copying the other link

for G re opening another tab paste and

go similarly again we are going for

accept license agreement then for this

Linux 64 where x64 we are selecting this

version and save okay so two files are

in are getting downloaded on to my

download folder so two files have got

downloaded we are opening one terminal

here so these are terminal when for the

next step so you are going to create one

folder Java under user slash local now

shall

come to the Downloads folder then you

shall copy this GRE file there is a GRE

start r dot digit and also the JDK start

dot dot dot gz8 so these two files were

going to copy onto the Java folder and

then we shall extract these two files so

we're coming down to this user local

Java folder now so now we are going for

this pseudo dot X visit F so we are

going for the extraction of the GRE zip

file and also doing the same also doing

the same for this so here you can find

that we are going for this pseudo tar x

VZ f j TK star dot dot dot g jet so in

this way you are extracting the jdk file

and similarly we are extracting that GID

file so they will get extracted and they

will create their own folders so they

will create their own folders and the

respective files will be there so in two

separate folders they have got extracted

now I shall go for this pseudo G edit /

e TC slash profile file so shall come at

the end we shall create a space and here

you are going to copy here we are going

to copy these are the paths we are going

to copy here you see this is data path

so export Java home then the path for

this Java and then export JT home and

then part they are to be updated and

then export path so these are the five

lines were doing the copy here and now

we shall go for the paste onto that /et

see slash profile file

so before going for the paste at first

were going to go into this user local

and the respective Java folder so if you

go for this LS you can find that here we

are having two G files there is a JDK

file that is a dot dot dot G jet and JE

file that is dot dot dot digit and after

getting extracted we have got two

folders that is a JDK 1.8 dot 0

underscore 181 and GRE 1.8 dot 0

underscore 181

so these two are the folders so this

folder paths are to be mentioned here in

our the respective home paths for this

whatever you are going to update on to

the ETS folder it is a profile file so

that's why this particular names are

required so I'm just checking them and

now we shall go for yes so these are the

names are there I'm just going for the

highlighting so going for the copy again

so now going for the paste so let me

make this one one it one because we had

that one one it one here you can check

that it's so this is my one eight one so

one seven one has to be replaced by one

eight one so I've done the required

objects I've done the required updates

here so this is very vital when for the

save closing that terminal going for the

save and close and then we shall go for

some alternative setup to updates the

alternative to set up the Java so before

that let me execute the profile so here

also I need to do some changes here so

we're supposed to execute all the six

comments there is a pseudo update

- alternative so all the six commands

are to be executed but before going to

do so let me make this one one seven one

is going to get replaced by 181 as I

told you the respective a folder name so

I'm making the changes here then I shall

go for a copy and then I shall go for

this terminal I shall go for the paste

now I shall go for the second line

I shall copy in the second line pasting

it on to this terminal similarly I shall

be doing the same for the rest lines

now I shall check whether the Java has

got installed properly or not let me

check the version of the Java and it

shows that it has got loaded properly so

in this way how to load this Java

installed this Java onto our system that

has been demonstrated properly thanks

for watching this video