hi all, Please take a look at the KIP-348[1] if you have free cycel. It bring a little change to the usage of SourceTask#poll()
[1] https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=89065853&moved=true#KIP-348EliminatenullfromSourceTask#poll()-Status Cheers, Chia-Ping
