[CASSANDRA-6862] Schema versions mismatch on large ring

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.0.7

Environment

2.0

• Severity: Normal
• Assignee: Oleg Anastasyev
• Reporter: Oleg Anastasyev

Authors

Oleg Anastasyev

Reviewers

Jonathan Ellis

• Created: 14/Mar/14 18:37
• Updated: 16/Apr/19 09:31
• Resolved: 19/Mar/14 06:05

Description

We have a large cluster with several hundreds nodes in 1 ring. Sometimes, especially after massive restarts, schema versions reported on different nodes mismatch.
Investigated and found, that difference is not in schema itsself, but in thombstones (different nodes have different set of thombstones applied to system tables).

Fixed by digesting schema with thombstones removed first.

Issue Links

• is duplicated by: CASSANDRA-8165 Do not include tombstones in schema version computation