Apache Druid

Yes, it’s generally not a good idea to conflate / share ZK and MDS between 2 clusters.

I have seen same zk being shared across druid clusters without issues. You will have to set some properties to make sure that they do not step on each other in zk.

For metadata store, you would have to set a different value for
```druid.metadata.storage.tables.base```
for different clusters.

`druid.zk.paths.base` for ZK. It defaults to `/druid` so just make sure the second one is set to something else like `/druid2` .