Recent questions tagged mapreduce

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sql exception when exporting

Sep 4 in Big Data Hadoop by Hemanth
 • 170 points • 33 views
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Job failed as tasks failed. failedMaps

Aug 1 in Big Data Hadoop by Hemanth
 • 170 points • 128 views
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Explanation to outputcollector vs context

Jul 26 in Big Data Hadoop by Jai
 • 13 views
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1 answer

Classes implementing InputFormat frequently

Jul 24 in Big Data Hadoop by Piyush
 • 13 views
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Mapreduce: custom Input format

Jul 24 in Big Data Hadoop by Ritu
 • 17 views
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Index LZO files

Jul 24 in Big Data Hadoop by Wasim
 • 23 views
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Produce compressed data from map reduce

Jul 24 in Big Data Hadoop by sanjeev
 • 17 views
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1 answer

Running Mapreduce on compressed data

Jul 24 in Big Data Hadoop by Vidya
 • 17 views
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1 answer

How to Compress Map output?

Jul 24 in Big Data Hadoop by karan
 • 9 views
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Input file name in the mapper in a Hadoop program

Jul 23 in Linux Administration by Upasana
 • 8,530 points • 42 views
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Why do we use job.waitForCompletion(true) ?

Jul 22 in Big Data Hadoop by Raghu
 • 21 views
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Which one is better MR or Spark?

Jul 15 in Big Data Hadoop by Lohit
 • 28 views
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2 answers

How to set up Map and Reduce Tasks?

Jul 12 in Big Data Hadoop by nitinrawat895
 • 10,670 points • 45 views
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Working of map function on data

Jul 11 in Apache Spark by Medha
 • 24 views
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1 answer

Difference b/w reduce and reduceLeft

Jun 20 in Big Data Hadoop by Keshav
 • 68 views
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1 answer

Multiple input for MapReduce job

Jun 20 in Big Data Hadoop by Kunal
 • 19 views
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1 answer

Error: Container is running beyond Memory Limits

Jun 20 in Big Data Hadoop by nitinrawat895
 • 10,670 points • 20 views
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1 answer

Command use to kill the job in MapReduce.

Jun 14 in Big Data Hadoop by rajiv
 • 28 views
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1 answer

Command to see the status of MapReduce job?

Jun 14 in Big Data Hadoop by Mahish
 • 35 views
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1 answer

Explain what is WebDAV in Hadoop?

Jun 10 in Big Data Hadoop by jina
 • 30 views
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1 answer

Explain what does the conf.setMapper Class do?

Jun 10 in Big Data Hadoop by sekhar
 • 21 views
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1 answer

Explain what is a sequence file in Hadoop?

Jun 10 in Big Data Hadoop by ranjan
 • 31 views
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Problem while running MapReduce code.

May 23 in Big Data Hadoop by Haman
 • 37 views
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1 answer

MapReduce to count alphabets

May 23 in Big Data Hadoop by Quill
 • 114 views
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1 answer

Map-reduce code for finding average salary

May 22 in Big Data Hadoop by Janan
 • 38 views
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