[KAFKA-4494] Significant startup delays in KStreams app

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.1.0
• Fix Version/s: 0.11.0.0
• Component/s: streams
• Labels: performance
• Environment: AWS Linux ami, mac os
• Assignee: Damian Guy
• Reporter: j yeargers
• Created: 06/Dec/16 13:17
• Updated: 24/Feb/17 18:35
• Resolved: 24/Feb/17 18:34

Description

Often starting a KStreams based app results in significant (5-10 minutes) delay before processing of stream begins.

Sample debug output: https://gist.github.com/jyeargers/e8398fb353d67397f99148bc970479ee

Topology in question: stream -> map -> groupbykey.aggregate -> print

Stream is JSON.

Issue Links

• links to: GitHub Pull Request #2560