[HDDS-5621] Support returning nodes of a level in NetworkTopology

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Labels: pull-request-available
• Assignee: Janus Chow
• Reporter: Janus Chow
• Created: 17/Aug/21 03:29
• Updated: 18/Aug/21 16:54
• Resolved: 18/Aug/21 13:42

Description

Currently, NetworkTopology has a function of "getNumOfNodes", which can be used to get the number of nodes in one level.

This ticket is to add a function which can be used be get all the nodes in one level. Which will be quite useful to spread datanodes across all racks.

Issue Links

• is related to: HDDS-5326 EC: Create a new as many racks as possible placement policy for EC
• links to: GitHub Pull Request #2541