[HADOOP-18756] CachingBlockManager to use AtomicBoolean for closed flag

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.3.9
• Fix Version/s: 3.4.0, 3.3.9
• Component/s: fs/s3
• Labels: pull-request-available
• Target Version/s: 3.4.0, 3.3.9
• Hadoop Flags: Reviewed
• Assignee: Viraj Jasani
• Reporter: Steve Loughran
• Created: 31/May/23 14:12
• Updated: 27/Jan/24 08:21
• Resolved: 27/Jun/23 12:43

Description

the CachingBlockManager uses the boolean field {{closed)) in various operations, including a do/while loop. to ensure the flag is correctly updated across threads, it needs to move to an atomic boolean.

Issue Links

• relates to: HADOOP-18740 s3a prefetch cache blocks should be accessed by RW locks
• links to: GitHub Pull Request #5718