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ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.RuntimeException: java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure javax.net.ssl.SSLException: Unsupported record version Unknown...

sqoop 产生背景 基于传统关系型数据库的稳定性，还是有很多企业将数据存储在关系型数据库中，早期由于工具的缺乏，hadoop与传统数据库之间的数据传输非常的困难，基于前两个方面的考虑，需要一个在传统关系型数据库 和hadoop之间进行数据传输的项目，sqoop应运而生 sqoop是什么 sqoop是一个用于hadoop和结构化存储（如关系型数据库之间进行高效传输大批量数据的工具，他包括两个方面， ​ 可以用sqoop将数据从关系型数据库管理系统如mysql导入到hadoop系统（hdfs，hiv

ERROR manager.SqlManager: Error executing statement: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from

问题 ERROR tool.ImportTool: Import failed: java.net.ConnectException: Call From leetom/192.168.10.88 to leetom:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused Cause

ERROR mapreduce.ExportJobBase: Export job failed! 21/07/19 22:23:21 ERROR tool.ExportTool: Error during export: Export job failed! 先重新导入数据 sqoop import --connect jdbc:mysql://qianfeng01:3306/leetom \ --username root --password 123456 \ --query 'select em

ERROR tool.BaseSqoopTool: Error parsing arguments for import: 21/07/19 16:13:56 ERROR tool.BaseSqoopTool: Unrecognized argument: --hive-imp 要把ip从localhost改成ip或者IP映射的主机名

Error: java.lang.RuntimeException: java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 有可能是地址映射的问题，我这里用的localhost，建议要用localhost，直接用地址映射的主机名，比如我192.168.111.111 映射的主机名是 leetom这里可以直接填leetom或者IP地.

ERROR hive.HiveConfig: Could not load org.apache.hadoop.hive.conf.HiveConf. Make sure HIVE_CONF_DIR is set correctly. 21/07/19 14:55:45 ERROR tool.ImportTool: Import failed: java.io.IOException: java.lang.ClassNotFoundException: org.apache.hadoop.hive.con.

ERROR tool.ImportTool: Import failed: Import job failed! or INFO mapreduce.Job: Job job_1626609768772_0001 failed with state FAILED due to: Task failed task_1626609768772_0001_m_000001 Job failed as tasks failed. failedMaps:1 failedReduces:0 or Caused.