在记录的log文件中提示：
+++ Target zone has been made null: finding new non-null target zone for node 161.
+++ Target zone has been made null: finding new non-null target zone for node 162.
+++ Target zone has been made null: finding new non-null target zone for node 163.
+++ Target zone has been made null: finding new non-null target zone for node 164.
+++ Target zone has been made null: finding new non-null target zone for node 165.
+++ Target zone has been made null: finding new non-null target zone for node 166.
+++ Target zone has been made null: finding new non-null target zone for node 167.
………………
………………
是什么意思？
在它显示的那些节点周围我没有设置空单元啊。
