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  Posted in: Cardinal
• August 19, 2014 at 11:13 am #102277
  javierojuel

  Member

  Post count: 44

  Hello,

  I have my website in WpEngine Hosting. Today I tried to continue working in my web site and I get a 502 Error (Bad Gateway). Last time I was working with the website, I was just see the “Clients custom post type” to introduce some clients, but I couldn’t as the website (backend) did not load correctly. The support told this:

  
  
  # User@Host: testalimmenta[testalimmenta] @ localhost [127.0.0.1]
  # Thread_id: 9903261  Schema: wp_testalimmenta  Last_errno: 0  Killed: 0
  # Query_time: 4.526572  Lock_time: 0.000042  Rows_sent: 363537  Rows_examined: 2557765  Rows_affected: 0  Rows_read: 2557765
  SELECT post_id, meta_key, meta_value FROM wp_postmeta WHERE post_id IN (81,82,85,89,11062,11233,11234,11245) ORDER BY meta_id ASC /* From [testalimmenta.wpengine.com/] in [/nas/wp/www/cluster-2588/testalimmenta/wp-content/themes/cardinal/swift-framework/content/sf-portfolio.php:81] */;
  
  This is one of the specific queries that is running for a long time, which is the most common cause of 502s. I would recommend switching themes for testing to see if any 502s remain.
  
  It also appears that the wp_postmeta table is very large, at roughly 2 million rows. If any optimization is performed on this table, that should also help.
  

  Now I will load a backup of the site to continue working. And I will check if this problem happens again. If you need further information I can give access to my website and load any backup.

  August 19, 2014 at 11:20 am #102283
  javierojuel

  Member

  Post count: 44

  This reply has been marked as private.
  August 19, 2014 at 11:28 am #102287
  Rui Guerreiro – SUPPORT

  Keymaster

  Post count: 25779

  Hi,

  It’s normal the increase in wp_postmeta is where is stored the major part of the information in a WordPress database.

  We have no other issues reported on this, so that 502 could be a temporary issue in your server. You didn’t changed anything and now it’s working.

  Check if you installed any plugin recently that can be causing any additional conflict.

  -Rui

  August 19, 2014 at 11:52 am #102303
  javierojuel

  Member

  Post count: 44

  I restored a copy of my website from 3 days ago (I have not done any development during these days) in order to continue working. I will try to find where the problem comes. I have just normal plugins installed (Akismet, Contact Form 7…) except a video sitemap plugin.

  Thank you for your fast answer.

  P.S:
  What I see in the database is that most of the images create 17 rows in the wp_postmeta table with information like this
  a:7:{s:9:"full-orig";a:3:{s:5:"width";i:800;s:6:"height";i:600;s:4:"file";s:28:"pb_port_video_poster_4_3.jpg";}s:14:"thumbnail-orig";a:4:{s:4:"file";s:36:"pb_port_video_poster_4_3-150x150.jpg";s:5:"width";i:150;s:6:"height";i:150;s:9:"mime-type";s:10:"image/jpeg";}s:11:"medium-orig";a:4:{s:4:"file";s:36:"pb_port_video_poster_4_3-300x225.jpg";s:5:"width";i:300;s:6:"height";i:225;s:9:"mime-type";s:10:"image/jpeg";}s:19:"post-thumbnail-orig";a:4:{s:4:"file";s:36:"pb_port_video_poster_4_3-220x150.jpg";s:5:"width";i:220;s:6:"height";i:150;s:9:"mime-type";s:10:"image/jpeg";}s:17:"widget-image-orig";a:4:{s:4:"file";s:34:"pb_port_video_poster_4_3-94x70.jpg";s:5:"width";i:94;s:6:"height";i:70;s:9:"mime-type";s:10:"image/jpeg";}s:17:"thumb-square-orig";a:4:{s:4:"file";s:36:"pb_port_video_poster_4_3-250x250.jpg";s:5:"width";i:250;s:6:"height";i:250;s:9:"mime-type";s:10:"image/jpeg";}s:16:"thumb-image-orig";a:4:{s:4:"file";s:36:"pb_port_video_poster_4_3-600x450.jpg";s:5:"width";i:600;s:6:"height";i:450;s:9:"mime-type";s:10:"image/jpeg";}}

  Is it normal?

  August 19, 2014 at 2:16 pm #102347
  Rui Guerreiro – SUPPORT

  Keymaster

  Post count: 25779

  Hi,

  Yes that’s normal. When you upload one image are created several different formats of 1 image. If you check the uploads folder you will see exactly what I mean.

  All that information is stored in wp_postmeta.

  -Rui

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  Posted in: Cardinal