Recent questions tagged mapreduce

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Pig mapreduce mode vs local mode?

Jan 4, 2019 in Big Data Hadoop by slayer
 • 29,370 points • 3,354 views
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Difference between hive.exec.compress.output=true; and mapreduce.output.fileoutputformat.compress=true;

Dec 28, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 6,001 views
0 votes
1 answer

Mapreduce shuffle and sort

Dec 27, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 704 views
–1 vote
1 answer

Mapreduce in Python

Dec 21, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,070 views
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Running into an issue while running the mapred job on the server

Dec 20, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 510 views
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If there are two joins in hive, how many mapreduce jobs will run?

Dec 19, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 6,939 views
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Hadoop MapReduce wordcount "type job is not applicable for the arguments" error

Dec 19, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 846 views
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1 answer

Apache Spark vs MapReduce

Dec 19, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 957 views
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What is the difference between MapReduce and YARN in Hadoop?

Dec 19, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 5,559 views
–1 vote
1 answer

Where does reduce take place in Hadoop MapReduce?

Dec 18, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,385 views
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MapReduce "cannot be resolved to a type" error

Dec 18, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,618 views
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1 answer

Executing mapper and reducer individually

Dec 18, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 688 views
+1 vote
1 answer

Hadoop Map Reduce: java.lang.reflect.InvocationTargetException

Dec 17, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,741 views
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1 answer

Junit test for Map Reduce Hadoop

Dec 17, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 2,578 views
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1 answer

Hadoop mapreduce java: NullPoint Exception

Dec 14, 2018 in Big Data Hadoop by digger
 • 26,740 points • 912 views
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1 answer

What is distributed Cache in MapReduce Framework ?

Dec 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,700 views
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1 answer

Hadoop mapreduce error: apache.hadoop.mapred.FileAlreadyExistsException: Output directory

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,582 views
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1 answer

Why Hadoop is not implemented using MPI?

Dec 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 912 views
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1 answer

Hadoop Mapper is failed because of the following error - “Container killed by the ApplicationMaster”

Dec 1, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 5,113 views
0 votes
1 answer

How to include third party library in Python MapReduce?

Nov 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 855 views
0 votes
1 answer

Not able to run mapreduce job. Attempt failes error

Nov 22, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,375 views
0 votes
1 answer

What is the usage of Configured class in Hadoop programs?

Nov 22, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,399 views
0 votes
1 answer

In Hadoop MapReduce, how can i set an Object as the Value for Map output?

Nov 21, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,017 views
0 votes
1 answer

Hadoop MapReduce intermediate output

Nov 16, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 706 views
0 votes
1 answer

Job and Task Scheduling In Hadoop

Oct 31, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,862 views
0 votes
1 answer

Hadoop: How to Group mongodb - mapReduce output?

Oct 31, 2018 in Big Data Hadoop by digger
 • 26,740 points • 926 views
0 votes
1 answer

Hadoop: No Such Method Exception

Oct 26, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,835 views
0 votes
3 answers

How to specify KeyValueTextInputFormat Separator in Hadoop-.20 api?

Oct 24, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,964 views
0 votes
1 answer

What is Hadoop Performance Tuning?

Oct 24, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 906 views
0 votes
1 answer

What is the best way to integrate SAS with Hadoop without losing the parallel processing capacity of Hadoop

Oct 16, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,285 views
+4 votes
3 answers

Unable to find file error- while Streaming Hadoop

Oct 15, 2018 in Big Data Hadoop by digger
 • 26,740 points • 4,328 views
0 votes
1 answer

Is it possible to integrate Kdb+ and hadoop?

Oct 10, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 973 views
0 votes
1 answer

Is MapR a substitute for MapReduce?

Oct 10, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,278 views
0 votes
1 answer

What is Hadoop Speculative task execution?

Oct 3, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,178 views
0 votes
1 answer

What is the difference between Writable & WritableComparable in Hadoop?

Oct 3, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 7,896 views
0 votes
1 answer

Iterate twice on values (MapReduce)

Oct 1, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 2,164 views
0 votes
1 answer

When I try to connect to Hadoop, I get a error as -"Connecting to Resource Manager failed".

Sep 28, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,398 views
0 votes
1 answer

Does map/reduce merge output files after reduce phase?

Sep 25, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 858 views
0 votes
1 answer

How to pass large records to map/reduce tasks?

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,469 views
0 votes
1 answer

Integration of Hadoop with Mongo DB concept

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,778 views
0 votes
1 answer

What is Dumbo MapReduce in Hadoop?

Sep 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,062 views
0 votes
1 answer

What is Modeling data in Hadoop and how to do it?

Sep 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,809 views
0 votes
2 answers

Is there a .NET equivalent to Apache Hadoop?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,782 views
0 votes
1 answer

What is Custom partitioner in Hadoop? How to write partition function ?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,591 views
0 votes
1 answer

What is the difference between Hadoop MapReduce and built-in MapReduce?

Sep 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,627 views
0 votes
1 answer

How to format the output being written by MapReduce in Hadoop?

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,632 views
0 votes
1 answer

What is the best functional language to do Hadoop Map-Reduce?

Sep 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 921 views
0 votes
1 answer

What are the options for hadoop on scala?

Aug 22, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 647 views
0 votes
1 answer

What are the problems in creating volume in mapr hadoop?

Aug 22, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,049 views
0 votes
1 answer

How hadoop command works with javac?

Aug 17, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 2,663 views
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