[HDDS-11503] Add Robot test to verify Container Balancer for EC containers

• Type: Test
• Status: Resolved
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 2.0.0
• Component/s: test
• Labels: pull-request-available
• Assignee: Daniil
• Reporter: Maksim Myskov
• Created: 30/Sep/24 15:07
• Updated: 21/Oct/24 17:48
• Resolved: 18/Oct/24 06:49

Description

Currently there is a robot test for container balancer for RATIS container. We should add robot test for EC case as well.

Test case:
1. Move 1 datanode to maintenance mode (we use 4 datanodes in this test)
2. Create multiple keys  (after loading the data, we check that 3 datanodes are ~60% busy, and the one that is in maintenance mode is empty)
4. Start datanode recommission (wait until datanode recommissioning is completed)
5. Start container balancer (wait until container balancer is completed)
6. Check results (after balancing on all 4 datanodes, we should see approximately the same data distribution.)

Issue Links

• is a clone of: HDDS-10612 Add Robot test to verify Container Balancer for RATIS containers
• links to: GitHub Pull Request #7311