[MESOS-5359] The scheduler library should have a delay before initiating a connection with master.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 1.0.0
• Labels: mesosphere
• Epic Link: Scheduler API v1 improvements
• Sprint: Mesosphere Sprint 37
• Story Points: 3
• Assignee: José Guilherme Vanz
• Reporter: Anand Mazumdar
• Shepherd: Anand Mazumdar
• Created: 10/May/16 17:22
• Updated: 20/Jun/16 14:40
• Resolved: 20/Jun/16 14:40

Description

Currently, the scheduler library src/scheduler/scheduler.cpp does have an artificially induced delay when trying to initially establish a connection with the master. In the event of a master failover or ZK disconnect, a large number of frameworks can get disconnected and then thereby overwhelm the master with TCP SYN requests.

On a large cluster with many agents, the master is already overwhelmed with handling connection requests from the agents. This compounds the issue further on the master.

Issue Links

• is related to: MESOS-5330 Agent should backoff before connecting to the master