databricks: check if the mountpoint already mounted

Question

How to check if the mount point is already mounted before mount in databricks python ??

dbutils.fs.mount

Thanks

Answer 1

Try this:

def sub_unmount(str_path):
    if any(mount.mountPoint == str_path for mount in dbutils.fs.mounts()):
        dbutils.fs.unmount(str_path)

sub_unmount('/mnt/flightdata')

Result:

/mnt/flightdata has been unmounted.

Verify with this:

dbutils.fs.ls("/mnt/")

Inspired by this: https://forums.databricks.com/questions/8103/graceful-dbutils-mountunmount.html

Answer 2

Open a new cell in Databricks notebook and write the below command:

%fs mounts
OR
display(dbutils.fs.mounts())

As an output, you will get mountpoint, path, and the encryption type.

Answer 3

How to check if the mount point is already mounted before mount in databricks python ??

You can use the below cmdlet to check if the mount point is already mounted before mount in databricks python.

%fs ls dbfs:/mnt

Example: I have two mount points attached to the DBFS and the results as shown as follows.

OR

You can use the below cmdlet to check if the mount point is already mounted before mount in databricks python.

dbutils.fs.ls('/mnt/')

Hope this helps.

Answer 4

For someone looking for scala solution

val mounts = dbutils.fs.ls("/mnt/").filter(_.name.contains("is_mounted_blob"))
println(mounts .size)

If the blob is mounted it will give a non zero size.