Github user StefanRRichter commented on the issue:
https://github.com/apache/flink/pull/6020
After double checking with the RocksDB docs, I am afraid that we need to
introduce more checks because for example the point out that also after methods
like `seek` the iterator an become corrupted. And if the status flag is
potentially cleared, that means we need to check in all the places...crazy :-(---
