So the process of Amazon Redshift cluster migration is almost completed.
New cluster is way more powerful. Now seeking ways to fully utilize its resources 😄

I can state that not everything has gone as expected.
The most painful parts turned out to be:

– Migrating S3 bucket with 1M+ files to a new region (took ~4-5 hours) – really challenging
– Not losing data events while switching between clusters
– VPC and network issues (connecting from BI tool)
– Hotfixing several Python UDFs suddenly not working on a new environment

In some time I will publish a detailed reflection on this process.