desc描述表过长时，无法显示完整

问题现象

desc描述表过长时，如何让描述显示完整？

处理步骤

1. 启动Hive的beeline时，设置参数maxWidth=20000即可，例如：

   [root@192-168-1-18 logs]# beeline --maxWidth=20000
   scan complete in 3ms
   Connecting to 
   ……
   Beeline version 1.1.0 by Apache Hive

2. （可选）通过beeline -help命令查看关于客户端显示的设置。如下：

     -u <database url>             the JDBC URL to connect to
     -n <username>               the username to connect as
     -p <password>               the password to connect as
     -d <driver class>              the driver class to use
     -i <init file>                  script file for initialization
     -e <query>                  query that should be executed
     -f <exec file>                 script file that should be executed
     --hiveconf property=value       Use value for given property
     --color=[true/false]             control whether color is used for display
     --showHeader=[true/false]       show column names in query results
     --headerInterval=ROWS;         the interval between which heades are displayed
     --fastConnect=[true/false]       skip building table/column list for tab-completion
     --autoCommit=[true/false]       enable/disable automatic transaction commit
     --verbose=[true/false]           show verbose error messages and debug info
     --showWarnings=[true/false]     display connection warnings
     --showNestedErrs=[true/false]    display nested errors
     --numberFormat=[pattern]        format numbers using DecimalFormat pattern
     --force=[true/false]              continue running script even after errors
     --maxWidth=MAXWIDTH          the maximum width of the terminal
     --maxColumnWidth=MAXCOLWIDTH    the maximum width to use when displaying columns
     --silent=[true/false]           be more silent
     --autosave=[true/false]         automatically save preferences
     --outputformat=[table/vertical/csv2/tsv2/dsv/csv/tsv]  format mode for result display
                                      Note that csv, and tsv are deprecated - use csv2, tsv2 instead
     --truncateTable=[true/false]    truncate table column when it exceeds length
     --delimiterForDSV=DELIMITER     specify the delimiter for delimiter-separated values output format (default: |)
     --isolation=LEVEL               set the transaction isolation level
     --nullemptystring=[true/false]  set to true to get historic behavior of printing null as empty string
     --socketTimeOut=n               socket connection timeout interval, in second. The default value is 300.