Hello There,   I have configured CDH5.10.0 (Manual configuration mode using YUM) on CentOS 7. It is a Pseudo distributed mode for learning purpose. I have opted for Sqoop 1 and below is the sqoop version: Sqoop 1.4.6-cdh5.10.0   When trying to import table from MySQL (mysql  Ver 14.14 Distrib 5.7.17, for Linux (x86_64) using  EditLine wrapper) I'm getting below java exception: "Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONObject"   I tried to execute few other sqoop commands like list-databases, list-tables, eval. All these commands returned expected results without any errors.   below is sqoop statement and the error message:   $ sqoop import --connect jdbc:mysql://localhost/employees --table employees --username xxx -P Warning: /usr/lib/sqoop/../hbase does not exist! HBase imports will fail. Please set $HBASE_HOME to the root of your HBase installation. Warning: /usr/lib/sqoop/../hcatalog does not exist! HCatalog jobs will fail. Please set $HCAT_HOME to the root of your HCatalog installation. Warning: /usr/lib/sqoop/../accumulo does not exist! Accumulo imports will fail. Please set $ACCUMULO_HOME to the root of your Accumulo installation. 17/02/12 17:44:39 INFO sqoop.Sqoop: Running Sqoop version: 1.4.6-cdh5.10.0 Enter password: 17/02/12 17:44:43 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset. 17/02/12 17:44:43 INFO tool.CodeGenTool: Beginning code generation Sun Feb 12 17:44:43 IST 2017 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. 17/02/12 17:44:44 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `employees` AS t LIMIT 1 17/02/12 17:44:44 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `employees` AS t LIMIT 1 17/02/12 17:44:44 INFO orm.CompilationManager: HADOOP_MAPRED_HOME is /usr/lib/hadoop-mapreduce Note: /tmp/sqoop-yj/compile/50d8bdd75972961328544c90d3d8d539/employees.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. 17/02/12 17:44:45 INFO orm.CompilationManager: Writing jar file: /tmp/sqoop-yj/compile/50d8bdd75972961328544c90d3d8d539/employees.jar 17/02/12 17:44:45 WARN manager.MySQLManager: It looks like you are importing from mysql. 17/02/12 17:44:45 WARN manager.MySQLManager: This transfer can be faster! Use the --direct 17/02/12 17:44:45 WARN manager.MySQLManager: option to exercise a MySQL-specific fast path. 17/02/12 17:44:45 INFO manager.MySQLManager: Setting zero DATETIME behavior to convertToNull (mysql) 17/02/12 17:44:45 INFO mapreduce.ImportJobBase: Beginning import of employees 17/02/12 17:44:45 INFO Configuration.deprecation: mapred.job.tracker is deprecated. Instead, use mapreduce.jobtracker.address Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONObject     at org.apache.sqoop.util.SqoopJsonUtil.getJsonStringforMap(SqoopJsonUtil.java:43)     at org.apache.sqoop.SqoopOptions.writeProperties(SqoopOptions.java:767)     at org.apache.sqoop.mapreduce.JobBase.putSqoopOptionsToConfiguration(JobBase.java:388)     at org.apache.sqoop.mapreduce.JobBase.createJob(JobBase.java:374)     at org.apache.sqoop.mapreduce.ImportJobBase.runImport(ImportJobBase.java:256)     at org.apache.sqoop.manager.SqlManager.importTable(SqlManager.java:692)     at org.apache.sqoop.manager.MySQLManager.importTable(MySQLManager.java:127)     at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:507)     at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:615)     at org.apache.sqoop.Sqoop.run(Sqoop.java:143)     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)     at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)     at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)     at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)     at org.apache.sqoop.Sqoop.main(Sqoop.java:236) Caused by: java.lang.ClassNotFoundException: org.json.JSONObject     at java.net.URLClassLoader.findClass(URLClassLoader.java:381)     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)     ... 15 more     I have spent 3-4 hours searching for solution in community topics as well some other blogs, but could resolve the problem.   Request you all experts to please guide how to get rid of this exception.   Thanks in advance!   Best Regards, YJ ... View more