How to store mapreduce output into a variable?
The problem is to find the department in which number of projects is 40% more than total number of projects in the company.
My idea is to calculate the total no. of projects and then calculate the no.of projects dept. wise, and using both outputs find out the answer.
here is the code to find total number of projects:
public class totalNoProjectsMapper extends Mapper<LongWritable,Text,NullWritable,LongWritable> {
public static long sum = 0;
@Override
public void map(LongWritable key,Text value,Context context)throws IOException,InterruptedException
{
String tokens = value.toString().split(",");
long no_of_projects = Long.parseLong(tokens[2]);
sum+=no_of_projects;
context.write(NullWritable.get(),new LongWritable(sum));
}
I want the output of this job to be stored into a variable so that I can use it another mapreduce job (all programs are in the same Project in eclipse)
mapreduce hadoop2
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
add a comment |
The problem is to find the department in which number of projects is 40% more than total number of projects in the company.
My idea is to calculate the total no. of projects and then calculate the no.of projects dept. wise, and using both outputs find out the answer.
here is the code to find total number of projects:
public class totalNoProjectsMapper extends Mapper<LongWritable,Text,NullWritable,LongWritable> {
public static long sum = 0;
@Override
public void map(LongWritable key,Text value,Context context)throws IOException,InterruptedException
{
String tokens = value.toString().split(",");
long no_of_projects = Long.parseLong(tokens[2]);
sum+=no_of_projects;
context.write(NullWritable.get(),new LongWritable(sum));
}
I want the output of this job to be stored into a variable so that I can use it another mapreduce job (all programs are in the same Project in eclipse)
mapreduce hadoop2
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
add a comment |
The problem is to find the department in which number of projects is 40% more than total number of projects in the company.
My idea is to calculate the total no. of projects and then calculate the no.of projects dept. wise, and using both outputs find out the answer.
here is the code to find total number of projects:
public class totalNoProjectsMapper extends Mapper<LongWritable,Text,NullWritable,LongWritable> {
public static long sum = 0;
@Override
public void map(LongWritable key,Text value,Context context)throws IOException,InterruptedException
{
String tokens = value.toString().split(",");
long no_of_projects = Long.parseLong(tokens[2]);
sum+=no_of_projects;
context.write(NullWritable.get(),new LongWritable(sum));
}
I want the output of this job to be stored into a variable so that I can use it another mapreduce job (all programs are in the same Project in eclipse)
mapreduce hadoop2
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
The problem is to find the department in which number of projects is 40% more than total number of projects in the company.
My idea is to calculate the total no. of projects and then calculate the no.of projects dept. wise, and using both outputs find out the answer.
here is the code to find total number of projects:
public class totalNoProjectsMapper extends Mapper<LongWritable,Text,NullWritable,LongWritable> {
public static long sum = 0;
@Override
public void map(LongWritable key,Text value,Context context)throws IOException,InterruptedException
{
String tokens = value.toString().split(",");
long no_of_projects = Long.parseLong(tokens[2]);
sum+=no_of_projects;
context.write(NullWritable.get(),new LongWritable(sum));
}
I want the output of this job to be stored into a variable so that I can use it another mapreduce job (all programs are in the same Project in eclipse)
mapreduce hadoop2
mapreduce hadoop2
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
asked Nov 24 '18 at 13:49
Srj SunnySrj Sunny
88
88
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53458809%2fhow-to-store-mapreduce-output-into-a-variable%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53458809%2fhow-to-store-mapreduce-output-into-a-variable%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
