Impact of Full Table Copy

[Christian Becker]

Hi There,

at the moment I'm running a huge operation (Modify Table), which leads to a full table copy. On a "normal" MariaDB System I wouldn't even care, but how about Galera. Will there be any problems, after Modifications are finished? 

Couldn't find any information about this.

Bests

Chris

[Philip Stoev]

Hello,

By default, in Galera 3.x, a DDL statement will lock the entire cluster for
commits for the duration of the statement. After the statement is completed,
the cluster will resume processing new transactions.

It is also possible to run the DDL on one node at a time, letting the
remaining nodes continue running.

You can read more about Galera and DDLs here:

http://galeracluster.com/documentation-webpages/schemaupgrades.html

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