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a397889c81
"Currently new nodes calculate digests based on v3 schema mutations, which are very different from v2 mutations. As a result they will use schemas with different table_schema_version that the old nodes. The old nodes will not recognize the version and will try to request its definition. That will fail, because old nodes don't understand v3 schema mutations. To fix this problem, let's preserve the digests during migration, so that they're the same on new and old nodes. This will allow requests to proceed as usual. This does not solve the problem of schema being changed during the rolling upgrade. This is not allowed, as it would bring the same problem back. Fixes #2549." * tag 'tgrabiec/use-consistent-schema-table-digests-v2' of github.com:cloudius-systems/seastar-dev: tests: Add test for concurrent column addition legacy_schema_migrator: Set digest to one compatible with the old nodes schema_tables: Persist table_schema_version schema_tables: Introduce system_schema.scylla_tables schema_tables: Simplify read_table_mutations() schema_tables: Resurrect v2 read_table_mutations() system_keyspace: Forward-declare legacy schemas legacy_schema_migrator: Take storage_proxy as dependency