我如何让Hive打印出格式精美的结果,列名和空间,如mysql?例如:
$ hive -f performanceStatistics.hql ... Kill Command = /usr/lib/hadoop/bin/hadoop job -kill job_201306211023_1053 Hadoop job information for Stage-1: number of mappers: 8; number of reducers: 1 2013-09-04 17:30:56,092 Stage-1 map = 0%, reduce = 0% 2013-09-04 17:31:03,132 Stage-1 map = 25%, reduce = 0%, Cumulative CPU 13.87 sec ... MapReduce Total cumulative CPU time: 2 minutes 5 seconds 260 msec Ended Job = job_201306211023_1053 MapReduce Jobs Launched: Job 0: Map: 8 Reduce: 1 Cumulative CPU: 125.26 sec HDFS Read: 1568029694 HDFS Write: 93 SUCCESS Total MapReduce CPU Time Spent: 2 minutes 5 seconds 260 msec OK 19.866045211878546 0.023310810810810812 10 0 824821 25 1684.478659112734 0.16516737901191694 Time taken: 34.324 seconds
如何使用列名和良好的间距获得结果?我还想在PostgreSQL中有一个像mysql\G或\ x这样的扩展视图.
使用
set hive.cli.print.header=true;
打印列名[1].
至于间距,输出已经是制表符分隔的,所以你如何进一步处理它取决于你.
[1] https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-CommandLineInterface