Doctrine 2 Close Connection

Question

I use doctrine 2 PDO with mysql.

When stress testing the server, mysql reports a lot of aborted connections (up-to 20%).

I am trying to locate the issue.

Answer 1

From what I've observed, Doctrine uses persistent connections.

We've stumbled upon a problem, launching unit tests in symfony2, where the database was spammed with connections in "Sleep" status. The solution that worked for us:

$entityManager->getConnection()->close();