Get the last updated file in HDFS

问题:

I want the latest updated file from one of my HDFS directories. The code should basically loop through the directories and sub directories and the get the latest file path with the file name.I was able to get the latest file in local file system but not sure how to do it for HDFS one.

find /tmp/sdsa -type f -print0 | xargs -0 stat --format '%Y :%y %n' | sort -nr | cut -d: -f2- | head

The above code is working for local file system. I am able to get the date , time and file name from HDFS, but how do I get the latest file using these 3 parameters?

this is the code I tried:

hadoop fs -ls -R /tmp/apps | awk -F" " '{print $6" "$7" "$8}'

Any help will be appreciated.

Thanks in advance.

回答1:

This one worked for me:

hadoop fs -ls -R /tmp/app | awk -F" " '{print $6" "$7" "$8}' | sort -nr | head -1 | cut -d" " -f3

The output is the entire file path.

回答2:

Here is the command:

hadoop fs -ls -R /user| awk -F" " '{print $6" "$7" "$8}'|sort -nr|head|cut -d" " -f3-

Your script it self is good enough. Hadoop returns the dates in YYYY-MM-DD HH24:MI:SS format and hence you can just sort them alphabetically.