My KStreams app seems to be having some memory issues. 1. I start it `java -Xmx8G -jar <app>.jar`
2. Wait 5-10 minutes - see lots of 'org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0xc58abee3e000013 after 0ms' messages 3. When it _finally_ starts reading values it typically goes for a minute or so, reads a few thousand values and then the OS kills it with 'Out of memory' error. The topology is (essentially): stream->aggregate->filter->foreach It's reading values and creating a rolling average. During phase 2 (above) I see lots of IO wait and the 'scratch' buffer (usually "/tmp/kafka-streams/appname") fills with 10s of Gb of .. ? (I had to create a special scratch partition with 100Gb of space as kafka would fill the / partition and make the system v v unhappy) Have I misconfigured something?
