[infinispan-dev] TwoWayKey2StringMapper and keys which are never stored

Hello, While implementing a TwoWayKey2StringMapper for the Lucene Directory I noticed that it's mandatory to implement two-way conversions also for keys which I'm not going to ever store. This directory has some different keys types, some need to be eventually storable (if a Store is configured), while some others are always handled with the Flag.SKIP_CACHE_STORE and should never be stored. Still if I don't implement conversion of this type, I get a stacktrace about this type being not supported by the LuceneKey2StringMapper during rehashing. I'm not able to grasp the reason for this two-way key conversion to be needed for rehashing - I can only guess that you have good reasons for that - but I'm totally lost at why this implementation is being called for keys which I actually want to make sure they are never stored. Could this limitation be removed, or am I mandated to use two differently configured caches to store this information? Regards, Sanne