If you upgrade the server to 4.1, attempts to connect to it with an older client may fail with the following message...
如果升级到4.1以后使用一个老的客户端连接就会出现上面的提示信息了。
If you upgrade the server to 4.1, attempts to connect to it with an older client may fail with the following message...
如果升级到4.1以后使用一个老的客户端连接就会出现上面的提示信息了。
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