Unknown initial character set index '255' received from server. Initial client character set can be
mysql的连接错误，在网上查找到是编码不匹配的原因， 直接在连接的URL后加上?useUnicode=true&characterEncoding=utf8就可以了 ...
原文：错误：set_ugi() not successful, Likely cause: new client talking to old server. Continuing without it.
错误： 失败原因： 由于客户端连接大于hive.server .thrift.max.worker.threads，我们收到此错误，HiveServer 停止接受新连接并最终失败 ...
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Unknown initial character set index '255' received from server. Initial client character 解决方法
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Exception in thread "main" java.sql.SQLException: Unknown initial character set index '255' received from server. Initial client character set can
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Unknown character set index for field '255' received from server.
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