[HBASE-28047] Deadlock when opening mob files

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-4, 2.5.5
• Fix Version/s: 2.6.0, 2.4.18, 2.5.6, 3.0.0-beta-1
• Component/s: mob
• Assignee: Xiaolin Ha Assign to me
• Reporter: Xiaolin Ha
• Created: 28/Aug/23 04:28
• Updated: 28/Sep/23 21:53
• Resolved: 28/Sep/23 01:03

Description

The hashcode of mob file name is used in MobFileCache to lock the cached mob files, but hashcode may be repeated and the IdLock is not reentrant. Then when opening a not cached file with evicting the opened by LRU, the repeated hashcode files will bring deadlock.

mobdeadlock.js

Issue Links

• links to: GitHub Pull Request #5374