当我执行 desc xujiyou;时，出现错误：
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. java.lang.ClassNotFoundException Class org.apache.hive.hcatalog.data.JsonSerDe not found
这时退出 hive ，然后在 shell 里执行：
$ locate *hive-hcatalog-core*.jar在系统中查找出对应的jar，若没有，去网上下载一个。我的系统里面有：
/opt/cloudera/cm/cloudera-navigator-server/libs/cdh5/hive-hcatalog-core-1.1.0-cdh5.12.0.jar
/opt/cloudera/cm/cloudera-navigator-server/libs/cdh6/hive-hcatalog-core-2.1.1-cdh6.1.1.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/jars/hive-hcatalog-core-2.1.1-cdh6.1.1.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/hbase-solr/lib/hive-hcatalog-core.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/hive-hcatalog/share/hcatalog/hive-hcatalog-core-2.1.1-cdh6.1.1.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/hive-hcatalog/share/hcatalog/hive-hcatalog-core.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/impala/lib/hive-hcatalog-core.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/oozie/embedded-oozie-server/webapp/WEB-INF/lib/hive-hcatalog-core-2.1.1-cdh6.1.1.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/oozie/lib/hive-hcatalog-core.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/oozie/oozie-sharelib-yarn/lib/hcatalog/hive-hcatalog-core.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/oozie/oozie-sharelib-yarn/lib/pig/hive-hcatalog-core.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/oozie/oozie-sharelib-yarn/lib/sqoop/hive-hcatalog-core.jar
/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/sentry/lib/hive-hcatalog-core.jar
随便选一个新版本的，然后进入hive后执行：
ADD JAR /opt/cloudera/cm/cloudera-navigator-server/libs/cdh6/hive-hcatalog-core-2.1.1-cdh6.1.1.jar;
然后再运行 desc xujiyou; 完美！