[FLINK-7517] let NettyBufferPool extend PooledByteBufAllocator

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.0
• Fix Version/s: 1.5.0
• Component/s: Runtime / Network
• Assignee: Nico Kruber
• Reporter: Nico Kruber
• Created: 25/Aug/17 11:27
• Updated: 10/Jan/18 09:31
• Resolved: 10/Jan/18 09:31

Description

NettyBufferPool wraps PooledByteBufAllocator but due to this, any allocated buffer's alloc() method is returning the wrapped PooledByteBufAllocator which allowed heap buffers again. By extending the PooledByteBufAllocator, we prevent this loop hole and also fix the invariant that a copy of a buffer should have the same allocator.

Issue Links

• links to: GitHub Pull Request #4594