Need a JMX/Nodetool command to recreate components for SSTables without re-writing the data files.
Possible implementation idea:
Create a nodetool (recreate|regen)component command that would enable you to recreate specific components of an SSTable, and also allow specifying SSTables or columnfamilies.
I'd say a flag for a list of components and a flag for SSTables with keyspace.columnfamilies as positional arguments would work
Alternatively this could become part of upgradesstables, but would likely make that command a bit bloated.
CASSANDRA-11163 we changed it so summaries and bloomfilters were not regenerated or persisted on startup. This means we would rely on compactions/upgrades to regenerate the bloomfilter (or other components) after a configuration change. While this works, it's pretty inefficient on large tables just because you changed the bloomfilter size or summary chunk sizes.