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# File activerecord/lib/active_record/connection_adapters/abstract/connection_handler.rb, line 75 def initialize # These caches are keyed by pool_config.connection_specification_name (PoolConfig#connection_specification_name). @owner_to_pool_manager = Concurrent::Map.new(initial_capacity: 2) # Backup finalizer: if the forked child skipped Kernel#fork the early discard has not occurred ObjectSpace.define_finalizer self, FINALIZER end