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table: Fix quadratic behavior when inserting sstables into tracker on schema change #12593
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raphaelsc
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Doesn't all build a sstable_list?
If so, we can just keep it and use it here?
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Not always. It builds a new list if the set is compound (maintenance + main or sets of all groups). Here we're working on main set only of a single group.
For partititioned_sstable_set, for example, we just return its local copy of all.
I think the interface is fragile as user can modify local copy if it doesn't copy on write.
lw_shared_ptr<sstable_list> all() const;
should be changed to
lw_shared_ptr<const sstable_list> all() const;