[SLING-2967] Make topology connectors independent from machine clocks differences

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Discovery Impl 1.0.0
• Fix Version/s: Discovery Impl 1.0.0
• Component/s: Extensions
• Assignee: Stefan Egli
• Reporter: Stefan Egli
• Created: 16/Jul/13 12:12
• Updated: 12/Nov/15 11:27
• Resolved: 22/Jul/13 12:27

Description

In a setup where two machines use discovery.impl to connect the topology between each other - and the two machines's clock have a considerable difference, say 1min - the discovery.impl rejects the incoming announcement, treating it as 'expired'.

While in theory it is reasonable to assume that server clocks in data centers run fairly in-sync, it is still safer to avoid any dependency on the accuracy of clocks.

The topology connector should not be dependent on those clocks and not pass times as part of the announcement-json - but rather stamp incoming announcements with local clocks.

Issue Links

• relates to: SLING-3434 Make intra-cluster discovery-heartbeats independent from machine clock differences