galera alter
Jan 29, 2019
To prevent bloking the cluster while doing ALTERS (SCHEMA UPGRADES), do this per node:
SET wsrep_OSU_method='RSU'; Then Run the ALTER statement once done reset the Schema Upgrade method back to Total Order Isolation.
SET wsrep_OSU_method='TOI'; http://galeracluster.com/documentation-webpages/clusterstallonalter.html http://galeracluster.com/documentation-webpages/schemaupgrades.html
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