Hi everyone, I found that cassandra will first flush new schema to disk and then change in memory while updating schema in Cassandra3.11.4 (SchemaKeyspace.java:1378) . But it seems that cassandra will only validate the schema while changing in memory, and will not validate before flush to disk. I don't know why not validate before flushing to disk ? Some request will succeed in updating schema to disk and fail to update schema in memory, which will make the schema in disk and schema in memory are not consistent.
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