[HDFS-17210] Optimize AvailableSpaceBlockPlacementPolicy

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.3.6
• Fix Version/s: 3.4.0
• Component/s: hdfs
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: guophilipse
• Reporter: Fei Guo
• Created: 25/Sep/23 13:14
• Updated: 28/Jan/24 01:25
• Resolved: 16/Oct/23 08:49

Description

for now ,we may have many nodes usage over 85%, some nodes'usage have been over 90%, if we choose three nodes as nodeA-97%,nodeB-98%,nodeC-99%, actually i don't want nodeC(99%) be choosen, for nodeC usage is really high , even random chance ,nodeC will reach 100% soon, so we can directly choose the less usage node(nodeA) if all nodes's usage are over 95%(just a example)

Issue Links

• links to: GitHub Pull Request #6113