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全部错误： 2020-08-29 00:38:52,849 [JISQL] /usr/java/current/bin/java -cp /usr/hdp/current/ranger-admin/ews/lib/mysql-connector-java.... 阅读全文
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错误：SQL state: HY000 java.sql.SQLException: null, message from server: "Host '192.168.0.182' is blocked because of many connection... 阅读全文
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Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7... 阅读全文
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package kafkaproducer;public class Data { public String user; public String activity; public long timeStramp; public i... 阅读全文
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package kafkaproducer;public class Data { public String user; public String activity; public long timeStramp; public i... 阅读全文
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package kafkaproducer;import com.alibaba.fastjson.JSON;import org.apache.flink.api.common.serialization.SimpleStringSchema;import ... 阅读全文
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报错原因是junit-4.12.jar 不包含hamcrest-core-1.3.jar包，需要自己单独下载加入到jar包中 下载地址：hamcrest-core-1.3.jar 阅读全文
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hdfs处于安全模式，需要关闭 bin/hadoop dfsadmin -safemode leave 阅读全文
Redis server.c:5103:19: server.c:5174:31: error: ‘struct redisServer’ has no member named ‘server_cp
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1、安装gcc套装： yum install cpp yum install binutils yum install glibc yum install glibc-kernheaders yum install glibc-common yum insta... 阅读全文