[KAFKA-6711] GlobalStateManagerImpl should not write offsets of in-memory stores in checkpoint file

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.1
• Fix Version/s: 0.10.2.2, 0.11.0.3, 1.0.2, 1.1.1, 2.0.0
• Component/s: streams
• Labels: newbie
• Assignee: Cemalettin Koç
• Reporter: Cemalettin Koç
• Reviewer: Matthias J. Sax
• Created: 24/Mar/18 20:26
• Updated: 24/Aug/18 00:42
• Resolved: 14/Jun/18 11:48

Description

We are using an InMemoryStore along with GlobalKTable and I noticed that after each restart I am losing all my data. When I debug it, `/tmp/kafka-streams/category-client-1/global/.checkpoint` file contains offset for my GlobalKTable topic. I had checked GlobalStateManagerImpl implementation and noticed that it is not guarded for cases similar to mine. I am fairly new to Kafka land and probably there might be another way to fix issue. 

Issue Links

• links to: GitHub Pull Request #4782
• links to: GitHub Pull Request #4789
• links to: GitHub Pull Request #5219