column "memory_used" of information_schema can't report usage over 2G

While troubleshooting a query using over 9G of memory I noticed that the column "memory_used" is an integer and doesn't hold sizes over 2G; it will report 2147483647.

Although it is unlikely for queries to use such large amounts of memory, this column should be a bigint and not an int for those situations where the weird thing happens.