[GEODE-3948] Improve CQ performance under flaky network conditions

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.9.0
• Component/s: docs
• Labels: pull-request-available
• Assignee: Bruce J Schuchardt
• Reporter: Galen O'Sullivan
• Created: 02/Nov/17 23:33
• Updated: 03/Oct/19 22:30
• Resolved: 15/Apr/19 19:24

Description

Client CQ connections occasionally stop receiving messages and become blocked indefinitely.

This can be caused by a server that hangs or dies without sending a close message, or by some firewalls.

The client already gets ping messages from the server, but currently ignores them. Let's use those messages to detect a failed connection and close it.

Probably the client should follow the same logic and send ping messages if it has sent no acks for a while, so that the server can also detect and close a broken connection.

The timeout could be specified as a number and time interval, the ping interval and the number of missed pings after which to fail.

Issue Links

• is related to: GEODE-4657 Geode Native receives ping-interval field during client/server handshake
• links to: GitHub Pull Request #1364
• links to: GitHub Pull Request #1520
• links to: GitHub Pull Request #1536
• links to: GitHub Pull Request #3449