[HBASE-27646] Should not use pread when prefetching in HFilePreadReader

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.5.3
• Fix Version/s: 2.6.0, 3.0.0-alpha-4, 2.4.17, 2.5.4
• Component/s: Performance
• Assignee: Xiaolin Ha
• Reporter: Xiaolin Ha
• Created: 16/Feb/23 10:47
• Updated: 21/Mar/23 19:50
• Resolved: 20/Mar/23 11:29

Description

While prefetchOnOpen will read althrough the hfile, we should use stream read for it.

Issue Links

• links to: GitHub Pull Request #5030
• links to: GitHub Pull Request #5063
• links to: GitHub Pull Request #5122
• links to: GitHub Pull Request #5123
• links to: GitHub Pull Request #5124