{
writeBlockBufferAllocator = new BufferAllocatorMapped(SystemTDB.BlockSize) ;
}
else
{
writeBlockBufferAllocator = new BufferAllocatorMem() ;
}
reset(txn, fileRef, underlyingBlockMgr) ;
if ( txn.getMode() == ReadWrite.READ && underlyingBlockMgr instanceof BlockMgrJournal )
System.err.println("Two level BlockMgrJournal") ;