[MDEV-10077] Crossgrade from MySQL to MariaDB on Xenial fails Created: 2016-05-16  Updated: 2017-05-19  Resolved: 2017-05-19

Status: Closed
Project: MariaDB Server
Component/s: Platform Debian
Affects Version/s: 10.1
Fix Version/s: N/A

Type: Bug Priority: Major
Reporter: Elena Stepanova Assignee: Sergei Golubchik
Resolution: Won't Fix Votes: 0
Labels: foundation

Issue Links:
Blocks
blocks MDEV-7069 Fix buildbot failures in main server ... Stalled
Relates
relates to MDEV-9904 InnoDB 5.7 redo log in 10.0 Closed
Sprint: 10.2.1-5

 Description   

Xenial provides MySQL 5.7 as mysql-server.
MariaDB fails to install over MySQL 5.7 datadir due to MDEV-9904 which has been closed as "Won't fix".
Otto's comment to MDEV-9904 suggests he implemented a workaround which at least allows MariaDB to be installed. If there are no plans to look into the problem with InnoDB redo log, then at least the workaround should be merged to the main tree(s).

In buildbot, the failure can be seen in test_1 on both Xenial builders:
http://buildbot.askmonty.org/buildbot/builders/kvm-deb-xenial-amd64/builds/57/steps/test_1/logs/stdio

 Comments   
Comment by Sergei Golubchik [ 2017-05-19 ]

Because MDEV-9904 was closed as Won't fix, InnoDB-5.6 in 10.1 cannot read redo logs created by MySQL-5.7. So, a seamless upgrade from MySQL-5.7 is only solved in 10.2.

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