zhijiang created FLINK-7468: ------------------------------- Summary: Implement Netty sender backlog logic for credit-based Key: FLINK-7468 URL: https://issues.apache.org/jira/browse/FLINK-7468 Project: Flink Issue Type: Sub-task Components: Network Reporter: zhijiang Assignee: zhijiang Fix For: 1.4.0
This is a part of work for credit-based network flow control. Receivers should know how many buffers are available on the sender side (the backlog). The receivers use this information to decide how to distribute floating buffers. The {{ResultSubpartition}} maintains the backlog which only indicates the number of buffers in this subpartition, not including the number of events. The backlog is increased for adding buffer to this subpartition, and decreased for polling buffer from it. The backlog is attached in {{BufferResponse}} by sender as an absolute value after the buffer being transferred. -- This message was sent by Atlassian JIRA (v6.4.14#64029)