[HDFS-15295] AvailableSpaceBlockPlacementPolicy should use chooseRandomWithStorageTypeTwoTrial() for better performance.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.4, 3.2.2, 3.3.1, 3.4.0
• Fix Version/s: 3.1.4, 3.2.2, 3.3.1, 3.4.0
• Component/s: block placement
• Target Version/s: 3.1.4, 3.2.2, 3.3.1, 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Jinglun
• Reporter: Jinglun
• Created: 22/Apr/20 09:43
• Updated: 11/Feb/24 06:17
• Resolved: 24/Apr/20 18:55

Description

The chooseRandomWithStorageTypeTwoTrial is introduced in HDFS-11535 for better performance.  I think the AvailableSpaceBlockPlacementPolicy should use this too.

Issue Links

• is related to: HDFS-11535 Performance analysis of new DFSNetworkTopology#chooseRandom
• relates to: HDFS-16223 AvailableSpaceRackFaultTolerantBlockPlacementPolicy should use chooseRandomWithStorageTypeTwoTrial() for better performance.