Apache Pinot

Hi, we had a server go into a gc loop where it wasn't reducing the heap (only 1 server, the other 5 are fine). Then we noticed that 3 out of 6 of our servers had 2x the amount of data for a table (i.e. 300gb vs 150gb). I am running a rebalance now. Is there anything we can do to even out the disk space among all the servers? We also have replicas per partition set to 3, but we have 6 servers, should we increase replicas to 6, or reduce replicas per partition to 2?

I'm seeing DirectBufferR increasing in the heap - should I disable the offheap settings we have?

Finding a lot out: if we use the `pinot.server.instance.realtime.alloc.offheap.direct` option, we see an ever increasing # of DirectR Buffers references in the heap. Are those references to mmapped segments?