How to list files in hdfs that contains a specific string?

0 votes
I have stored few files in hdfs (CSV files). Some of these files have passwords and usernames stored. I am doing it on Single node cluster and just for practice. I can not find in which files I have stored passwords because all the CSV files are named in ascending Natural numbers. There are over 50 files and I can’t manually check. Is there a way I can use pattern match to do this?
Jan 27 in Big Data Hadoop by Krishna
567 views

1 answer to this question.

0 votes

Yes, you can do this. You can use hdfs command to list the files and then use grep to find the pattern in those files. Example:

hadoop fs -ls pat/to/dir | grep password

This will filter the files and list only those files that have the word you are looking for.

answered Jan 27 by Omkar
• 67,520 points

Related Questions In Big Data Hadoop

0 votes
1 answer

How to create a FileSystem object that can be used for reading from and writing to HDFS?

Read operation on HDFS In order to read ...READ MORE

answered Mar 21, 2018 in Big Data Hadoop by nitinrawat895
• 10,670 points

edited Mar 21, 2018 by nitinrawat895 296 views
0 votes
5 answers
0 votes
1 answer

How to print the content of a file in console present in HDFS?

Yes, you can use hdfs dfs command ...READ MORE

answered Apr 19, 2018 in Big Data Hadoop by Shubham
• 13,290 points
505 views
0 votes
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 10,670 points
2,761 views
0 votes
1 answer

hadoop.mapred vs hadoop.mapreduce?

org.apache.hadoop.mapred is the Old API  org.apache.hadoop.mapreduce is the ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 10,670 points
290 views
0 votes
10 answers

hadoop fs -put command?

put syntax: put <localSrc> <dest> copy syntax: copyFr ...READ MORE

answered Dec 7, 2018 in Big Data Hadoop by Aditya
13,661 views
0 votes
1 answer

Hadoop dfs -ls command?

In your case there is no difference ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by kurt_cobain
• 9,240 points
1,002 views
0 votes
5 answers

Hadoop hdfs: list all files in a directory and its subdirectories

Hi, You can try this command: hadoop fs -ls ...READ MORE

answered Aug 1 in Big Data Hadoop by Dinish
1,692 views
0 votes
1 answer

How to check the size of a file in Hadoop HDFS?

You can use the  hadoop fs -ls command to ...READ MORE

answered Nov 21, 2018 in Big Data Hadoop by Omkar
• 67,520 points
833 views