I have an Opensearch cluster I upgraded from 1.3.3 to 2.2.0 last week. Ubuntu 20.04
The upgrade seemed to be successful, all the nodes in the cluster report as connected and as version 2.2.0. No apparent problems.
However, all the nodes are now occasionally spamming this log message, which seems suspicious to me:
[INFO ][o.o.a.u.d.DestinationMigrationCoordinator] [my-node-name] Detected cluster change event for destination migration
This message is a little concerning. As if some step of the upgrade never finished.
I am confident I didn’t skip a node somewhere, and have even restarted all the nodes twice just for good measure.
Any ideas what could be going on? What does this message mean? If this is indicative of some unfinished step in the upgrade, what could it be?