[FLINK-7315] use flink's buffers in netty

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.0
• Component/s: Runtime / Network
• Assignee: Nico Kruber
• Reporter: Nico Kruber
• Created: 31/Jul/17 14:17
• Updated: 20/Oct/20 06:57
• Resolved: 20/Oct/20 06:57

Description

The goal of this change is to avoid the step in the channel encoder and decoder pipelines where flink buffers are copied into netty buffers. Instead, netty should directly send flink buffers to the network.

Issue Links

• is duplicated by: FLINK-7512 avoid unnecessary buffer copies during network serialization