[MESOS-9258] Prevent subscribers to the master's event stream from leaking connections

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Done
• Fix Version/s: 1.8.0
• Component/s: HTTP API
• Labels: foundations mesosphere
• Sprint: Mesosphere RI-6 Sprint 2018-30, Mesosphere RI-6 Sprint 2018-31, Mesos Foundations R7 Sprint 32, Mesos Foundation R7 Sprint 33, Mesos Foundations R8 Sprint 34, Mesos Foundations R8 Sprint 35
• Story Points: 5
• Assignee: Joseph Wu
• Reporter: Gastón Kleiman
• Shepherd: Gastón Kleiman
• Created: 26/Sep/18 00:13
• Updated: 14/Dec/18 21:37
• Resolved: 14/Dec/18 21:37

Description

Some reverse proxies (e.g., ELB using an HTTP listener) won't close the upstream connection to Mesos when they detect that their client is disconnected.

This can make Mesos leak subscribers, which generates unnecessary authorization requests and affects performance.

We should evaluate methods (e.g., heartbeats) to enable Mesos to detect that a subscriber is gone, even if the TCP connection is still open.

Issue Links

• is related to: MESOS-7564 Introduce a heartbeat mechanism for v1 HTTP executor <-> agent communication.
• is related to: MESOS-7974 SUBSCRIBE calls should use "application/recordio" Accept/Content-Type.
• is related to: MESOS-9189 Include 'Connection: close' header in master streaming API responses.