André Brunnsberg

The code uses `sun.misc.Unsafe` which isn't supported anymore in Java 17: https://github.com/batterseapower/btreemap/blob/ba6f9ce32e99ccb9b4e965f1e634e5df8bd6b838/src/main/templates/uk.co.omegaprime.btreemap/%7B%7BKV_%7D%7DNode.java#L64 The problem can be fixed by replacing it with `jdk.internal.misc.Unsafe.objectFieldOffset` but it would be better to altogether get...

Compact() method for maps doesn't check if a rehash is needed

5

In for example LongDoubleHashMap the compact() method directly calls: `this.rehash(this.smallestPowerOfTwoGreaterThan(this.size()));` This rehashes also the maps in those cases where the map cannot be compacted. It would be better to first...

### Is your feature request related to a problem? Please describe. I'm using FastCSV to split massive CSV files (~1 billion rows) into multiple files by grouping rows by key...