Update to WP 4.7 is corrupting database

I have 4 wordpress blogs which were running flawless on WP 4.6.1.
After the update to WP 4.7 all my blogs went down and my SQL-server crashed.

See also this topic:
https://www.ads-software.com/support/topic/blogs-crashed-after-latest-update-to-wp-4-7-text-editor-missing/

After restarting MySQL server with help from my hosting, I saw these errors in my dashboard:

Warning: Creating default object from empty value in /public_html/wp-admin/includes/post.php on line 641

Warning: Invalid argument supplied for foreach() in /public_html/modules/wordpress-seo/admin/metabox/class-metabox.php on line 1054

and my default text editor was missing.

The same technical support of my hosting provider investigated this issue and found out that the update to WP 4.7 corrupted my database files (!).

He repaired the tables “wp_posts.MYI” and “wp_statistics_useronline.MYI” and now the posts and text editor are back live now.
See his report below:

root@server1 [/var/lib/mysql/scblrinc_scblrinc]# myisamchk -r wp_posts.MYI
– recovering (with sort) MyISAM-table ‘wp_posts.MYI’
Data records: 17951
– Fixing index 1
– Fixing index 2
– Fixing index 3
– Fixing index 4
– Fixing index 5
– Fixing index 6
– Fixing index 7
– Fixing index 8
root@server1 [/var/lib/mysql/scblrinc_scblrinc]# myisamchk -r wp_statistics_useronline.MYI
– recovering (with sort) MyISAM-table ‘wp_statistics_useronline.MYI’
Data records: 2
– Fixing index 1
Data records: 1
root@server1 [/var/lib/mysql/scblrinc_scblrinc]#

There’s something wrong with the update; it corrupts database files.
Please fix this.

• This topic was modified 7 years, 11 months ago by Kookidooki.