@Override
    public void reset() {
        Iterator<T> iter = snapshottableIterator(SnapshottableHashTable.LATEST_EPOCH);
        while (iter.hasNext()) {
            iter.next();
            iter.remove();
        }
    }
Iterate over the values that existed in the hash table during a specific snapshot.

You can use this iterator even if you are making changes to the map.
The snapshot is immutable and will always show up the same.
server-common/src/main/java/org/apache/kafka/timeline/SnapshottableHashTable.java