[HDDS-1511] Space tracking for Open Containers in HDDS Volumes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.4.1
• Component/s: Ozone Datanode
• Labels: pull-request-available
• Sprint: Done
• Assignee: Supratim Deka
• Reporter: Supratim Deka
• Created: 09/May/19 15:19
• Updated: 05/Aug/19 14:45
• Resolved: 15/May/19 17:27

Description

For every HDDS Volume, track the space usage in open containers. Introduce a counter committedBytes in HddsVolume - this counts the remaining space in Open containers until they reach max capacity. The counter is incremented (by container max capacity) for every container create. And decremented (by chunk size) for every chunk write.

Space tracking for open containers will enable adding a safety check during container create.
If there is not sufficient free space in the volume, the container create operation can be failed.

The scope of this jira is to just add the space tracking for Open Containers. Checking for space and failing container create will be introduced in a subsequent jira.

Issue Links

• links to: GitHub Pull Request #812