Hi Alexis,
Flink does need some heap memory to bridge requests to rocksdb and gather
the results. In most cases, the memory is discarded immediately (eventually
collected by GC). In case of timers, flink do cache a limited subset of
key-values in heap to improve performance.
In general you don't
Hi Lorenzo,
It is not recommended to do this with the keyed state. However there is an
example in flink code (FastTop1Function#snapshotState) [1] of setting keys
when snapshotState().
Hope this helps.
[1]
