Bug #93228 Database unusable after crash during export
Submitted: 16 Nov 2018 12:07 Modified: 16 Dec 2018 13:57
Reporter: Malcolm Sparrow Email Updates:
Status: No Feedback Impact on me:
None 
Category:MySQL Workbench: Administration Severity:S1 (Critical)
Version:8.0.12 OS:Mac OS X (High Sierra & Mojave)
Assigned to: CPU Architecture:Any
Tags: Backup, corruption, crash, data loss, export

[16 Nov 2018 12:07] Malcolm Sparrow
Description:
Running a local MySQL server instance, on exporting a schema to a self-contained .sql file with structure and data as a single transaction, including create schema, Workbench will (at random) crash. 

Afterwards, none of the local schema's are visible in Workbench, and are deemed 'missing' despite all related .idb files still being present within the local /data folder hierarchy.

This is unrecoverable, and requires re-initialising the server instance through the OSX Preferences applet, and re-importing previous backups.

How to repeat:
With a valid server instance and connection;
Alter several tables in MySQL WorkBench (without it crashing)
- added 'Unique' to primary key fields
Select 'Data Export'
Select the schema 'piCore'
- configured as per screenshot
Tap 'Export'
- export appears to succeed
- MySQL Workbench crashes
On restarting MySQL Workbench
- all schema's are visible, but cannot be expanded and do not contain any tables
[16 Nov 2018 12:10] Malcolm Sparrow
MySQL error log

Attachment: error-log.txt (text/plain), 45.43 KiB.

[16 Nov 2018 12:12] Malcolm Sparrow
Further - a subsequent export has resulted in no crash, but a total failure to export due to being unable to connect to the server (despite currently being connected). 

Please see the attached 'export-failure.txt'
[16 Nov 2018 12:12] Malcolm Sparrow
Export failure output...

Attachment: export-failure.txt (text/plain), 1.79 KiB.

[16 Nov 2018 13:57] Miguel Solorzano
Thank you for the bug report. Please try version 8.0.13 if the issue still exists we need a backup file the smaller possible to run the test, zip the file and attach using the Files tab with private option. Thanks.
[17 Dec 2018 1:00] Bugs System
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".