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Fix error re-running some migrations if they get interrupted at the wrong moment #17989

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merged 1 commit into from Apr 7, 2022
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Fix error re-running some migrations if they get interrupted at the wrong moment #17989

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3 changes: 3 additions & 0 deletions lib/mastodon/migration_helpers.rb
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Expand Up @@ -813,6 +813,9 @@ def column_for(table, name)
def update_index(table_name, index_name, columns, **index_options)
if index_name_exists?(table_name, "#{index_name}_new") && index_name_exists?(table_name, index_name)
remove_index table_name, "#{index_name}_new"
elsif index_name_exists?(table_name, "#{index_name}_new")
# Very unlikely case where the script has been interrupted during/after removal but before renaming
rename_index table_name, "#{index_name}_new", index_name
end

begin
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