[Spark][Python]sortByKey 例子：
[training@localhost ~]$ hdfs dfs -cat test02.txt
00002 sku010
00001 sku933
00001 sku022
00003 sku888
00004 sku411
00001 sku912
00001 sku331
[training@localhost ~]$
mydata001=sc.textFile("test02.txt")
mydata002=mydata001.map(lambda line: line.split(‘ ‘))
mydata002.take(3)
Out[4]: [[u‘00002‘, u‘sku010‘], [u‘00001‘, u‘sku933‘], [u‘00001‘, u‘sku022‘]]
mydata003=mydata002.sortByKey()
In [9]: mydata003.take(5)
Out[9]:
[[u‘00001‘, u‘sku933‘],
[u‘00001‘, u‘sku022‘],
[u‘00001‘, u‘sku912‘],
[u‘00001‘, u‘sku331‘],
[u‘00002‘, u‘sku010‘]]
In [10]:
API 参考：
https://spark.apache.org/docs/latest/api/python/pyspark.html#pyspark.RDD
原文：http://www.cnblogs.com/gaojian/p/7612792.html