spark core 2.0 MemoryLocation

MemoryLocation is tracked either by a memory address( with off-heap allocation), or by an offset from a JVM objet(in-heap allocation).

public class MemoryLocation {

@Nullable
Object obj;

long offset;

public MemoryLocation(@Nullable Object obj, long offset) {
this.obj = obj;
this.offset = offset;
}

public MemoryLocation() {
this(null, 0);
}

public void setObjAndOffset(Object newObj, long newOffset) {
this.obj = newObj;
this.offset = newOffset;
}

public final Object getBaseObject() {
return obj;
}

public final long getBaseOffset() {
return offset;
}
}