[Spark][Python]sortByKey 例子

Posted 2020-10-09

[Spark][Python]sortByKey 例子：

[[email protected] ~]$ hdfs dfs -cat test02.txt
00002 sku010
00001 sku933
00001 sku022
00003 sku888
00004 sku411
00001 sku912
00001 sku331
[[email protected] ~]$

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