CONNECT Engine - (1040) Too many connections when running in trigger

// Master

CREATE DATABASE IF NOT EXISTS test;

CREATE TABLE IF NOT EXISTS test.test_data (

    id 							INT,

    content						VARCHAR(255),

    PRIMARY KEY (id)

)  ENGINE=INNODB;

INSERT INTO test.test_data

VALUES

(1, "Test 01"),

(2, "Test 02");

// Slave

CREATE DATABASE IF NOT EXISTS test;

CREATE TABLE IF NOT EXISTS test.test_data (

    id 							INT,

    content						VARCHAR(255)

)   ENGINE=CONNECT TABLE_TYPE=MYSQL OPTION_LIST='connect=server_connect'

SRCDEF='SELECT id, content FROM test.test_data WHERE %s';

CREATE TABLE IF NOT EXISTS test.test_trigger (

    id 							INT,

    content						VARCHAR(255),

    PRIMARY KEY (id)

)   ENGINE=INNODB;

DELIMITER //

DROP TRIGGER IF EXISTS  test.after_test_trigger;

//

CREATE TRIGGER  test.after_test_trigger

AFTER INSERT ON  test.test_trigger

FOR EACH ROW

BEGIN

SET @test_content = (

SELECT td.content

FROM  test.test_data td

WHERE

td.id = NEW.id

);

END //

INSERT INTO test.test_trigger

VALUES

(1, "Test 01"),

(2, "Test 02");