[#MDEV-10518] Large wsrep_gtid_domain

A test environment was generating server_id / wsrep_gtid_domain_id based on certain unsigned 32-bit hash values. This sometimes resulted in a large unsigned value:

MariaDB [(none)]> select @@wsrep_gtid_domain_id;

+------------------------+

| @@wsrep_gtid_domain_id |

+------------------------+

|             3707887008 |

+------------------------+

1 row in set (0.00 sec)

When restarting a node and IST was initiated, the wsrep-sst-method=xtrabackup-v2 script was started with a negative gtid-domain-id as seen in the donor's logs:

[Note] WSREP: IST request: c0bdbd55-5b47-11e6-b904-d2ce4687a92f:9588-9788|tcp://10.0.0.1:4568

[Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.

[Note] WSREP: Running: 'wsrep_sst_xtrabackup-v2 --role 'donor' --address '10.0.0.1:4444/xtrabackup_sst//1' --socket '/var/run/mysqld/mysqld.sock' --datadir '/va

r/lib/mysql/'    --binlog '/var/log/mysql/mysql-bin' --gtid 'c0bdbd55-5b47-11e6-b904-d2ce4687a92f:9588' --gtid-domain-id '-587080288' --bypass'

And this resulted in a failure on the joiner:

WSREP_SST: [INFO] xtrabackup_ist received from donor: Running IST (20160808 18:09:44.535)

WSREP_SST: [INFO] Galera co-ords from recovery: c0bdbd55-5b47-11e6-b904-d2ce4687a92f:9588 -587080288 (20160808 18:09:44.538)

WSREP_SST: [INFO] Total time on joiner: 0 seconds (20160808 18:09:44.540)

WSREP_SST: [INFO] Removing the sst_in_progress file (20160808 18:09:44.542)

[ERROR] WSREP: Failed to get donor wsrep_gtid_domain_id.

[ERROR] WSREP: SST failed: 22 (Invalid argument)

[ERROR] Aborting

mysqld[779]: Error in my_thread_global_end(): 1 threads didn't exit

As a workaround, the wsrep_gtid_domain_id was clamped to range of a signed 32-bit integer and this problem was avoided. However, I think this should probably work.

[MDEV-10518] Large wsrep_gtid_domain_id may break IST Created: 2016-08-08 Updated: 2016-08-25 Resolved: 2016-08-25
Status:	Closed
Project:	MariaDB Server
Component/s:	Galera SST
Affects Version/s:	10.1.16
Fix Version/s:	10.1.17

[MDEV-10518] Large wsrep_gtid_domain_id may break IST Created: 2016-08-08 Updated: 2016-08-25 Resolved: 2016-08-25