这篇文章给大家分享的是有关hive中python udf的示例分析的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。
udfdata.txt:
aa pingpong,swim,running
create table udfdata(name String,hobby String) row format delimited fields terminated by '\t' ; LOAD DATA LOCAL INPATH '/Users/lifei/hivedata/udfdata.txt' OVERWRITE INTO TABLE udfdata; add file /Users/lifei/hivedata/parsehobby.py; select transform(name,hobby) using 'python parsehobby.py' as (name,hobby) from udfdata aa pingpong aa swim aa running add file /Users/lifei/hivedata/splithobby.py; select transform(hobby) using 'python splithobby.py' as (name,hobby,test) from udfdata; pingpong swim running
#parsehobby.py import sys for line in sys.stdin: detail = line.strip().split('\t') if (len(detail) < 2): continue name = detail[0] hobbis = detail[1] hobbyArray = hobbis.split(',') for hobby in hobbyArray: print "%s\t%s" %(name,hobby) #splithobby.py import sys for line in sys.stdin: detail = line.strip().split(',') print "%s\t%s\t%s" %(detail[0],detail[1],detail[2])
ps: explode和collect_set
中文或者str时报错:'ascii' codec can't encode characters in position 61-62
reload(sys)
sys.setdefaultencoding('utf8')
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