buffer size question

[anahap]

Hi 

I was wondering how storm behaves in respect to 

topology.executor.receive.buffer.size: 8 #batched

and
topology.executor.send.buffer.size: 8 #individual messages

will the executor wait until it has 8 messages before it sends a batched message?.

if yes what happens if there are only 2 messages for a long time? will the tuples just time out? or be sent after a preconfigured time?

if i have few tuples that have a long processing time in each bolt, would it be better to set the buffer sizes to 1?

TIA