Reduce EBS Default Volumes

[pabloanzorenac]

By default Databricks creates 2 volumes: one with 30GB and the other one with 150GB. 
We have a lot of nodes in our pools and so a los of Terabytes of Volumes, but we are not making any use of them in the jobs. Is there any way to reduce the volumes? I couldn't found any documentation for reducing the default ebs volumes.
Thanks

[daniel_sahal · Accepted solution]

@pabloanzorenac 
I don't think you'll be able to do that. Clusters are pre-defined and there's no way to change a configuration of each machine.

However even if you think that you're not using them in the jobs, Spark may actually do benefit by using them (ex. for caching).

[sean_owen]

Yes, EBS vols are essential for shuffle spill for example. You are probably using them!