MySQL based Metadata stores will be down for 2 hours

Apache Druid Q&A Google Groups
#1

I was informed from Amazon that MySQL based metadata stores in AWS will be down for 2 hours next week. I’m wondering if Druid cluster (0.8.0) may be not working without Metadata Store for 2 hours.

Do we need to build new MySQL server as a metadata store, change configuration and restart all components? Anyone who can help us?

(I’m curious why only metadata stores of Druid cluster does not have duplicated instance?)

#2

You should be fine even if it’s down. All it will mean is that new segments won’t be handed off. Assuming you have enough capacity to handle ingestion for 2 hrs you should be fine.

Also, usually people use master-slave RDS, which Usually doesn’t require a full downtime for maintenance. You might double check if your RDS instance is set up with a replica.

–Eric

#3

Hi Eric,

Thank you for your help.