Trying to get it to work with postgres

Gemfile

@@ -6,3 +6,4 @@ gem 'rake'
 gem 'rspec', '~>2'
 gem 'activerecord'
 gem 'mysql2'
+gem 'pg'

Gemfile.lock

@@ -23,13 +23,16 @@ GEM
       tzinfo (~> 0.3.37)
     arel (4.0.0)
     atomic (1.1.14)
+    atomic (1.1.14-java)
     builder (3.1.4)
     bump (0.3.5)
     diff-lcs (1.1.3)
     i18n (0.6.5)
     minitest (4.7.5)
     multi_json (1.8.0)
     mysql2 (0.3.13)
+    pg (0.17.0)
+    pg (0.17.0-x86-mingw32)
     rake (10.0.2)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)
@@ -41,6 +44,8 @@ GEM
     rspec-mocks (2.12.0)
     thread_safe (0.1.3)
       atomic
+    thread_safe (0.1.3-java)
+      atomic
     tzinfo (0.3.37)
 
 PLATFORMS
@@ -53,5 +58,6 @@ DEPENDENCIES
   bump
   mysql2
   parallel!
+  pg
   rake
   rspec (~> 2)

spec/cases/map_with_ar_postges.rb

@@ -0,0 +1,52 @@
+require File.expand_path('spec/spec_helper')
+require "active_record"
+
+Tempfile.open("yyy") do |f|
+  database = "parallel_with_ar_test"
+
+  ActiveRecord::Schema.verbose = false
+  ActiveRecord::Base.establish_connection(
+      :adapter => 'postgresql',
+      :database => database,
+      :username => 'tyler',
+      :pool => 5,
+      :port => 5432,
+      :reconnect => true
+  )
+
+  class User < ActiveRecord::Base
+  end
+
+  unless User.table_exists?
+    ActiveRecord::Schema.define(:version => 1) do
+      create_table :users do |t|
+        t.string :name
+      end
+    end
+  end
+
+
+
+  User.delete_all
+
+  User.create!(:name => "X")
+
+  Parallel.map(1..8) do |i|
+    puts "making user"
+    ActiveRecord::Base.connection.reconnect!
+    User.create!(:name => i)
+  end
+
+
+  puts "User.count: #{User.count}"
+
+  puts User.connection.reconnect!.inspect
+
+  Parallel.map(1..8, :in_threads => 4) do |i|
+    User.create!(:name => i)
+  end
+
+  User.create!(:name => "X")
+
+  puts User.all.map(&:name).sort.join("-")
+end