It's disabled by default. 

BTW: You only need to send it to user ML and it's not necessary to send it to the dev ML.

在 2019年11月7日,下午3:36,LakeShen <shenleifighting@gmail.com> 写道:

Hi community, as I know I can use idle state retention time to clear the flink sql task state,I have a question is that how long the flink sql task state default ttl is . Thanks