Writes during an online minor upgrade

MySQL & MariaDB Percona XtraDB Cluster 8.x
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I have a question regarding an online minor upgrade of a Percona XtraDB Cluster 8.x. The procedure (Upgrade Percona XtraDB Cluster - Percona XtraDB Cluster) indicates that I can perform the upgrade without any special steps for doing it online. However, some sources on the internet suggest that you shouldn’t perform any writes on the upgraded node until the entire cluster is on the newest version. Is that true, or can I continue write operations on every node during the upgrade?

Extra information, I’m running percona/percona-xtradb-cluster:8.0.34-26.1 and want to upgrade to percona-xtradb-cluster:8.0.41-32.1

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Hi @doets001,
SemVer, major.minor.patch, so this is upgrading a patch version (just to be ‘that guy’). You can continue writing during the upgrade. You should not run any DDL (ie: ALTER TABLE..) during the overall upgrade process, but normal DML should be fine.

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I saw that I had the destination version wrong, i corrected the text, I’m going from percona/percona-xtradb-cluster:8.0.34-26.1 to percona-xtradb-cluster:8.0.41-32.1, but your answer is clear. thank you.