[jira] [Created] (CASSANDRA-5904) Don't announce schema version until we've loaded the changes locally

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

Sylvain Lebresne created CASSANDRA-5904:
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             Summary: Don't announce schema version until we've loaded the changes locally
                 Key: CASSANDRA-5904
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5904
             Project: Cassandra
          Issue Type: Bug
            Reporter: Sylvain Lebresne
            Assignee: Sylvain Lebresne
            Priority: Minor


Currently, we call updateSchemaAndAnnounce (which sets the schema version in the system table and announce it on gossip) in DefsTable.mergeSchema as soon as we've persisted the schema mutation but *before* we've actually loaded new/updated KS/CF locally. This makes it impossible to reliably check for schema agreement in a cluster as even if all nodes have the same version set in the system tables, you could still get an insert on a new table rejected because the table hasn't been loaded yet.

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