Hello Team I am observing a few issues 1 I changed the repli

Question

Hello Team I am observing a few issues 1 I changed the replicas for a table from 1 to 3 All the segments that are created after the change have 3 replicas but the pre existing segments continue to have only 1 replica 2 When a server node goes down its hosted segments are not created on another node to maintain 3 replicas for the segments 3 When I add a new server no redistribution of segments happen automatically What are the expectations from Pinot in the above cases

Neha Pawar · Answer

you have to run a rebalance

Neha Pawar · Answer

Neha Pawar · Answer

for pre existing segments to increase replicas and also for redistribution of preexisting segments onto the new servers

Neha Pawar · Answer

2 is also not expected to happen automatically the replication factor is expected to cover for that

jainendra tarun · Answer

< Neha Pawar> Thanks for the clarification Is there any recommendation for the number of replicas in a 10 machine cluster

Neha Pawar · Answer

no recommendation as such Practically i ve seen production evnironments set it to 3

Neha Pawar · Answer

usually depends on if you encounter a node failure then all your query load will go to the remaining replica servers So can your server handle say 50 more load or 33 more load etc