Hello, You should have replicas and backups. You should be able to try with those. If you don't have those an upgrade is not the first action item on the list anyways.
Best jan On Wed, Jan 14, 2026, 20:00 Dong Ye <[email protected]> wrote: > Is it safe to upgrade metastore from 2.3.0 to 3.1.0 online? > > Get Outlook for Mac <https://aka.ms/GetOutlookForMac> > *From: *Dong Ye <[email protected]> > *Date: *Tuesday, January 13, 2026 at 2:21 PM > *To: *[email protected] <[email protected]> > *Subject: *sync_between_metastore_2.3.0_and_3.1.0 > > [EXTERNAL] > Hi, Fellow hive users: > > is there an online tool to convert/sync a hive megastore of old > version 2.3.0 to an online megastore of 3.1.0? So there is no down time, > and the airflow traffic can be redirected to a higher EMR version using the > new version of megastore. > > I have found a post : > https://aws.amazon.com/blogs/big-data/upgrade-amazon-emr-hive-metastore-from-5-x-to-6-x/ > , > but it requires the megastore to stop for some time. > > Thanks. > Have a great day! > > Get Outlook for Mac <https://aka.ms/GetOutlookForMac> >
