Disk space increasing due to Hawkular Metrics folder

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In our application, In one of the minions which is deployed over Openshift we are facing disk space issue.

On daily basis, The Hawkular-Metrics folder size is keep on increasing with lot many *.db files getting created. It is under Openshift.local.volumes folder.
Can you help us to understand what is this hawkular metrics folder, what is the use of this ?

How to safely remove/cleanup this folder. Shall we delete this folder ? Or how to cleanup this folder without impacting the application ?