Recent questions tagged mapreduce

+1 vote
0 answers

Class not found exception in wordcount program in mapreduce

Oct 3, 2019 in Big Data Hadoop by Tarun
 • 160 points • 141 views
+1 vote
1 answer

sql exception when exporting

Sep 4, 2019 in Big Data Hadoop by Hemanth
 • 240 points • 231 views
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Job failed as tasks failed. failedMaps

Aug 1, 2019 in Big Data Hadoop by Hemanth
 • 240 points • 947 views
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1 answer

Explanation to outputcollector vs context

Jul 26, 2019 in Big Data Hadoop by Jai
 • 89 views
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1 answer

Classes implementing InputFormat frequently

Jul 24, 2019 in Big Data Hadoop by Piyush
 • 27 views
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1 answer

Mapreduce: custom Input format

Jul 24, 2019 in Big Data Hadoop by Ritu
 • 96 views
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1 answer

Index LZO files

Jul 24, 2019 in Big Data Hadoop by Wasim
 • 67 views
0 votes
1 answer

Produce compressed data from map reduce

Jul 24, 2019 in Big Data Hadoop by sanjeev
 • 39 views
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1 answer

Running Mapreduce on compressed data

Jul 24, 2019 in Big Data Hadoop by Vidya
 • 35 views
0 votes
1 answer

How to Compress Map output?

Jul 24, 2019 in Big Data Hadoop by karan
 • 46 views
0 votes
1 answer

Input file name in the mapper in a Hadoop program

Jul 23, 2019 in Linux Administration by Upasana
 • 8,590 points • 389 views
0 votes
1 answer

Can we use different input and output format classes?

Jul 22, 2019 in Big Data Hadoop by Tilak
 • 45 views
0 votes
1 answer

Why do we use job.waitForCompletion(true) ?

Jul 22, 2019 in Big Data Hadoop by Raghu
 • 104 views
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1 answer

Output types of mapper and reducer does not match

Jul 22, 2019 in Big Data Hadoop by Karan
 • 482 views
0 votes
1 answer

Which one is better MR or Spark?

Jul 15, 2019 in Big Data Hadoop by Lohit
 • 111 views
0 votes
2 answers

How to set up Map and Reduce Tasks?

Jul 12, 2019 in Big Data Hadoop by nitinrawat895
 • 10,870 points • 176 views
0 votes
1 answer

Working of map function on data

Jul 11, 2019 in Apache Spark by Medha
 • 46 views
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1 answer

Difference b/w reduce and reduceLeft

Jun 20, 2019 in Big Data Hadoop by Keshav
 • 505 views
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1 answer

Multiple input for MapReduce job

Jun 20, 2019 in Big Data Hadoop by Kunal
 • 83 views
0 votes
1 answer

Error: Container is running beyond Memory Limits

Jun 20, 2019 in Big Data Hadoop by nitinrawat895
 • 10,870 points • 1,018 views
0 votes
1 answer

In Which cluster(Dev or Prod) we test the job?

Jun 20, 2019 in Big Data Hadoop by Manish
 • 52 views
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1 answer

Command use to kill the job in MapReduce.

Jun 14, 2019 in Big Data Hadoop by rajiv
 • 53 views
0 votes
1 answer

Command to see the status of MapReduce job?

Jun 14, 2019 in Big Data Hadoop by Mahish
 • 294 views
0 votes
1 answer

How to print the counter value in MapReduce?

Jun 14, 2019 in Big Data Hadoop by liza
 • 66 views
0 votes
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Command to initiate MapReduce which provide decent UI?

Jun 14, 2019 in Big Data Hadoop by Rachna
 • 44 views
0 votes
1 answer

Explain what is WebDAV in Hadoop?

Jun 10, 2019 in Big Data Hadoop by jina
 • 102 views
0 votes
1 answer

Explain what does the conf.setMapper Class do?

Jun 10, 2019 in Big Data Hadoop by sekhar
 • 62 views
0 votes
1 answer

Explain what is a sequence file in Hadoop?

Jun 10, 2019 in Big Data Hadoop by ranjan
 • 72 views
0 votes
1 answer

why do we need MaPReduce in BigData Hadoop?

Jun 3, 2019 in Big Data Hadoop by Rajnish
 • 54 views
0 votes
1 answer

Problem while running MapReduce code.

May 23, 2019 in Big Data Hadoop by Haman
 • 103 views
0 votes
1 answer

MapReduce to count alphabets

May 23, 2019 in Big Data Hadoop by Quill
 • 550 views
0 votes
1 answer

Map-reduce code for finding average salary

May 22, 2019 in Big Data Hadoop by Janan
 • 404 views
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