Hi,
I am using heroku and I got this exception about 100 times for the last few hours:

"
  Lost connection to MySQL server at 'reading authorization packet', system error: 0 - SELECT * FROM `episode_core` WHERE MATCH('ev3 color sensor') AND `tag_ids` = 52 AND `published_at` BETWEEN 0 AND 1456774436 AND `sphinx_deleted` = 0 LIMIT 0, 20 OPTION field_weights=(name=20, description=15, long_description=10, materials=5, tag_names=10, subtitles_html_content=5, categories_names=20); SHOW META
  app/controllers/episodes_controller.rb:32:in `index'
"
It has never happen before.

What could I do?