Auto transition an Epic to Done status once all the child issues are resolved/closed.

[nallu]

Can anyone please suggest me better way to auto transition an Epic to Done status once all the child issues are closed. 

We have script runner plugin installed and I have tried with Post Function and Script Listener. But that doesn't work out since it is not waiting until the indexing gets complete. 

Here is my post for that - https://community.atlassian.com/t5/Jira-questions/How-to-make-the-post-function-script-to-wait-until-the-re/qaq-p/1201997

Thanks in Advance!! 

[Paul Mata]

It may not be an elegant solution, but maybe you can just put in a delay to wait for the re-indexing to complete?

Thread.sleep(5000)