dizhou cao created FLINK-32191:
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Summary: Support for configuring keepalive related parameters.
Key: FLINK-32191
URL: https://issues.apache.org/jira/browse/FLINK-32191
Project: Flink
Issue Type: Improvement
Components: Runtime / Network
Reporter: dizhou cao
We encountered a case in our production environment where upstream was unable
to send data downstream due to an abnormality in the switch link. However,
upstream can only detect the abnormality after RTO timeout retransmission
failure, which takes about 15 minutes in our production environment. This may
result in a 15-minute job unavailability. We hope to perform failover and
reschedule job more quickly. Flink has already enabled keepalive, but the
default keepalive idle time is 2 hours. We can adjust the timeout of TCP
keepalive by configuring TCP_KEEPIDLE, TCP_KEEPINTERVAL, and TCP_KEEPCOUNT.
These configurations are already supported at the Netty.
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