Hadoop hdfs: How to count number of lines?

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I have stored a file in my hdfs. The data in the hdfs is distributed and I want to count the number of lines in the file that I stored in the hdfs (the original file). How can I do this?
Nov 19, 2018 in Big Data Hadoop by digger
• 27,640 points
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1 answer to this question.

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You can count the number of lines using spark:

myfile = spark.textFile("hdfs://...")
mycount = myfile.count();
mycount.dump();

This will output the number of lines in the file.

answered Nov 19, 2018 by Omkar
• 67,460 points

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