Upgrading Cassandra To Version 3

Mikhail Chinkov has a process for upgrading Cassandra from version 2 to the latest release of 3:

At first sight it should be obvious. Cassandra is a distributed storage and you’re able to upgrade each node independently. But also it’s a kind of tricky, because Cassandra has so many concepts and moving parts. Introducing such a major change, you’ll be probably excited about how not to break one.

Also, as with every DB upgrade, the most important outcome will be your app behaviour. Protocol versions support might be removed from the future versions. Storage might work another way application doesn’t expect. There might be a lot of pitfalls. So, to start getting the benefits of upgrade, we have to be 200% sure that the application works. And at least it won’t work worse with database.

The whole process is straightforward but there do seem to be a couple places where you can shoot yourself in the foot.

Related Posts

Expanding LVM Drives

David Klee shows how to expand an LVM drive on Linux: Next in our SQL Server on Linux series is one important question. On Windows, if you’re about to run out of space, you get your VM admin / storage admin to expand one or more of your drives, and you go to Disk Management […]

Read More

Filtering Alert Noise With A Leaky Bucket Algorithm

I have a post implementing a leaky bucket algorithm in T-SQL: Now that we have a table, we want to do something with it.  The most naive solution would be to fire off an alert every time a row gets added to this table.  The problem with this solution is that it can flood our […]

Read More

Categories

December 2017
MTWTFSS
« Nov Jan »
 123
45678910
11121314151617
18192021222324
25262728293031