[CASSANDRA-10364] Improve test coverage for schema tables and document 3.0 changes to schema tables

• Type: Improvement
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 3.0.x
• Assignee: Unassigned
• Reporter: Aleksey Yeschenko
• Created: 17/Sep/15 17:34
• Updated: 16/Apr/19 09:30

Description

In particular,

LegacySchemaMigratorTest.java:

Needed test coverage:
Legacy schema tables are removed
New schema tables are written to with the correct timestamp
Legacy schema tables don't exist in new schema tables
Migrating tables in general, especially COMPACT ones
Null values for any optional fields
Maybe UDTs that refer to other UDTs?
NTS keyspaces

Similar coverage is also important to have for SchemaKeyspace, with no migration involved.

Issue Links

• is related to: CASSANDRA-6717 Modernize schema tables