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在计算节点下检查配置时提示“ Cannot assign requested address: Service 'sparkDriver' failed after 16 retries (starting from 7777)! Consider explicitly setting the appropriate port for the service 'sparkDriver' (for example spark.ui.port for SparkUI) to an available port or increasing spark.port.maxRetries.”
解决方案：
1.检查端是否被占用，使用netstat 检查端口是否被占用，使用netstat -an|grep driver监听端口。
2.查看引擎所在物理机主机名，是否包含特殊符号。
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