Do we need to call fs.close() explicitly while working with HDFS using java API?

Question

Typical start of working with HDFS using org.apache.hadoop.fs classes on scala is

val conf = new Configuration()
fs = FileSystem.get(conf)

Do we need to call something like IOUtils.closeStream(fs) or fs.close() at the end?

I've found the single answer relating to this topic https://groups.google.com/forum/#!topic/nosql-databases/Mn9KLbtmh7M

In all my experience you let FileSystem instances close themselves.

I am not sure I can rely on it.

Answer 1

You can always use try with resources:

try (fs = FileSystem.get(conf)) {
  < your code>
}
    

Since FileSystem is closeable it will be closed at the end of the "try" scope