sqoop从mysql导数据到hdfs报错： SQLException in nextKeyValueCaused by: java.sql.SQLException: YEARCaused by: java.lang.IllegalArgumentException: YEAR

bin/hive 启动报错：Operation category READ is not supported in state standby

hive> show databases;FAILED: HiveException java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient

Caused by: org.apache.kafka.connect.errors.ConnectException: The connector is trying to read binlog starting at GTIDs afc2c4d5-7061-11ec-a4a5-00163e35e020:1-1717327 and binlog file 'mysql-bin.000443',

1.执行sql语句，报错信息。hive> insert into table student values(1,'abc'); Query ID = atguigu_20200814150018_318272cf-ede4-420c-9f86-c5357b57aa11 Total jobs = 1 Launching Job 1 out of 1 In order to change the

阿里云：Could not connect to SMTP host: smtp.163.com, port: 25

navicat中数据传输、数据同步、结构同步的区别

一、HDFS-HA 高可用集群配置准备工作1.准备环境安装3台CentOS7虚拟机，hostname分别为：hadoop102， hadoop103，hadoop104在hadoop102上进行如下安装与配置，最后进行分发到其他机器：1）jdk版本：jdk1.8.0_2122）hadoop版本：hadoop-3.1.33）软件安装目录：/opt/module简写说明：NN 代表 NameNodeZ

需求对两个文件里的单词出现次数进行统计（查询结果：a-p一个文件，q-z一个文件）输入文件1（word01.txt）HadoopSpark HiveHbaseHadoopSpark输入文件2（word02.txt）Java phpAndroidHtml5Bigdatapython计算结果：part-r-00000Android1Bigdata1Hadoop2Hbase1Hive1Html51php

hive执行命令：desc ods_event_log时，comment列为??编码的问题