Recent questions tagged mapreduce

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What is MapReduce?

Dec 22, 2021 in Big Data Hadoop by CoderGirl
 • 500 points • 267 views
+1 vote
1 answer

How does Hadoop process records split across block boundaries?

Dec 7, 2020 in Big Data Hadoop by Roshni
 • 10,520 points • 321 views
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How to find the status of MapReduce Job?

Oct 16, 2020 in Big Data Hadoop by akhtar
 • 38,240 points • 444 views
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Enable HA for mapreduce jobhistory server

Sep 23, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 653 views
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kernel: java: page allocation failure. order:4, mode:0x20

Apr 30, 2020 in Big Data Hadoop by akhtar
 • 38,240 points • 747 views
+1 vote
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Class not found exception in wordcount program in mapreduce

Oct 3, 2019 in Big Data Hadoop by Tarun
 • 160 points • 933 views
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1 answer

How to call MapReduce program using a simple Java Program?

Sep 4, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 809 views
+1 vote
1 answer

sql exception when exporting

Sep 4, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 1,817 views
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1 answer

Exception in thread "main" java.lang.NoClassDefFoundError

Aug 9, 2019 in Big Data Hadoop by Reshma
 • 1,866 views
+1 vote
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Job failed as tasks failed. failedMaps

Aug 1, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 5,967 views
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1 answer

Explanation to outputcollector vs context

Jul 26, 2019 in Big Data Hadoop by Jai
 • 1,105 views
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1 answer

Classes implementing InputFormat frequently

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

Mapreduce: custom Input format

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

Index LZO files

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

Produce compressed data from map reduce

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

Running Mapreduce on compressed data

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

How to Compress Map output?

Jul 24, 2019 in Big Data Hadoop by karan
 • 1,007 views
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1 answer

Input file name in the mapper in a Hadoop program

Jul 23, 2019 in Linux Administration by Upasana
 • 8,620 points • 2,530 views
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Can we use different input and output format classes?

Jul 22, 2019 in Big Data Hadoop by Tilak
 • 326 views
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Why do we use job.waitForCompletion(true) ?

Jul 22, 2019 in Big Data Hadoop by Raghu
 • 796 views
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Output types of mapper and reducer does not match

Jul 22, 2019 in Big Data Hadoop by Karan
 • 2,075 views
0 votes
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Which one is better MR or Spark?

Jul 15, 2019 in Big Data Hadoop by Lohit
 • 1,205 views
0 votes
2 answers

How to set up Map and Reduce Tasks?

Jul 12, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,539 views
0 votes
1 answer

Working of map function on data

Jul 11, 2019 in Apache Spark by Medha
 • 507 views
0 votes
1 answer

Difference b/w reduce and reduceLeft

Jun 20, 2019 in Big Data Hadoop by Keshav
 • 2,176 views
0 votes
1 answer

Multiple input for MapReduce job

Jun 20, 2019 in Big Data Hadoop by Kunal
 • 4,831 views
0 votes
1 answer

Error: Container is running beyond Memory Limits

Jun 20, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 6,060 views
0 votes
1 answer

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

Jun 20, 2019 in Big Data Hadoop by Manish
 • 325 views
0 votes
1 answer

Command use to kill the job in MapReduce.

Jun 14, 2019 in Big Data Hadoop by rajiv
 • 347 views
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