private void initializeNewlyAllocated(
        LlapAllocatorBuffer buffer, int allocSize, int headerIx, int offset) {
      buffer.initialize(data, offset, allocSize);
      buffer.setNewAllocLocation(arenaIx, headerIx);
    }
Unsets the headers (meaning this does not refer to a buffer).
llap-server/src/java/org/apache/hadoop/hive/llap/cache/BuddyAllocator.java