Node consistency compromised during shutdown

[mkaruza]

MySQL 5.7 shutdown procedure does not wait till all applier threads are closed. If applier is applying write set during initiated shutdown it could happen that node consistency is compromised because write set is not applied resulting in node abort.

...
2019-05-29T05:00:35.889463Z 0 [Note] Shutting down slave threads
2019-05-29T05:00:36.145648Z 2 [Warning] WSREP: Failed to apply app buffer: seqno: 547980330, status: 1
at galera/src/trx_handle.cpp:apply():353
Retrying 2th time
2019-05-29T05:00:36.145671Z 2 [Note] WSREP: applier has been aborted, skipping apply_rbr: 547980330
2019-05-29T05:00:36.176279Z 2 [Warning] WSREP: Failed to apply app buffer: seqno: 547980330, status: 1
at galera/src/trx_handle.cpp:apply():353
Retrying 3th time
2019-05-29T05:00:36.176302Z 2 [Note] WSREP: applier has been aborted, skipping apply_rbr: 547980330
2019-05-29T05:00:36.251995Z 2 [Warning] WSREP: Failed to apply app buffer: seqno: 547980330, status: 1
at galera/src/trx_handle.cpp:apply():353
Retrying 4th time
2019-05-29T05:00:36.252027Z 2 [Note] WSREP: applier has been aborted, skipping apply_rbr: 547980330
2019-05-29T05:00:36.369721Z 2 [ERROR] WSREP: Failed to apply trx: source: 8ec31469-8109-11e9-9595-3a236f1a3e8c version: 4 local: 0 state: APPLYING flags: 1 conn_id: 1951034 trx_id: 140947703 seqnos (l: 41027348, g: 547980330, s: 547980135, d: 547980098, ts: 10797851157436590)
2019-05-29T05:00:36.369780Z 2 [ERROR] WSREP: Failed to apply trx 547980330 4 times
2019-05-29T05:00:36.369795Z 2 [ERROR] WSREP: Node consistency compromised, aborting...
2019-05-29T05:00:36.369814Z 2 [Note] WSREP: /usr/sbin/mysqld: Terminated.
...

[mkaruza]

This should be fixed in upcoming 5.7.26-25.18