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Big Data, MapReduce, Hadoop, and Spark with Python: Master Big Data Analytics and Data Wrangling with MapReduce Fundamentals using Hadoop, Spark, and Python by LazyProgrammer

Author:LazyProgrammer , Date: March 27, 2020 ,Views: 167

Big Data, MapReduce, Hadoop, and Spark with Python: Master Big Data Analytics and Data Wrangling with MapReduce Fundamentals using Hadoop, Spark, and Python by LazyProgrammer

Author:LazyProgrammer
Language: eng
Format: azw3, epub
Published: 2016-08-14T16:00:00+00:00


That’s pretty ugly, so if we were to break it up into several lines we would get:

$ hadoop jar share/hadoop/tools/lib/hadoop-streaming-2.6.4.jar \

-file /home/hduser/wordcount/mapper.py \

-mapper /home/hduser/wordcount/mapper.py \

-file /home/hduser/wordcount/reducer.py \

-reducer /home/hduser/wordcount/reducer.py \

-input /small.txt \

-output /output

Which is still pretty ugly.

Alright, so there’s some crazy stuff going on here. First, Hadoop Streaming is itself a Java program. That’s where the first part “hadoop jar ..hadoop-streaming*.jar” comes from.



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Big Data, MapReduce, Hadoop, and Spark with Python: Master Big Data Analytics and Data Wrangling with MapReduce Fundamentals using Hadoop, Spark, and Python by LazyProgrammer.azw3
Big Data, MapReduce, Hadoop, and Spark with Python: Master Big Data Analytics and Data Wrangling with MapReduce Fundamentals using Hadoop, Spark, and Python by LazyProgrammer.epub


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