presto-hive/src/main/java/io/prestosql/plugin/hive/HiveConnector.java/HiveConnector/rollback
class HiveConnector:    @Override
    public void rollback(ConnectorTransactionHandle transaction)
    {
        TransactionalMetadata metadata = transactionManager.remove(transaction);
        checkArgument(metadata != null, "no such transaction: %s", transaction);
        try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
            metadata.rollback();
        }
    }