Apache Pinot

But I thought it would get removed from the ideal state when it’s dead? And another server has no segments so can replace it?

You can remove the dead instance and trigger the rebalance endpoint. iinw.

thats in auto helix mode - in custom helix mode, you need to untag that node, rebalance and then drop the dead node

<https://docs.pinot.apache.org/operators/operating-pinot/rebalance/rebalance-servers#changes-that-need-to-be-followed-by-a-rebalance>

Can I enable auto helix mode, or not with Pinot?

you dont need it if you start using logical instance id's

you are probably facing this bcos your ips are changing

you can avoid this by passing a stable instanceName