[HBASE-22447] Check refCount before free block in BucketCache

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0, 2.0.0, 2.2.0
• Fix Version/s: 3.0.0-alpha-1, 2.2.0, 2.3.0, 2.1.5
• Component/s: BucketCache
• Assignee: Lijin Bin
• Reporter: Lijin Bin
• Created: 21/May/19 08:19
• Updated: 28/May/19 01:56
• Resolved: 22/May/19 09:34

Description

As discuss in HBASE-22433, the ref count checking within the write lock is missing, so may refer to corrupt HFileBlock data with BucketCache.