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我试图使用python MRJob 这里是简单的Python脚本找到一个txt文件mrjob InstanceProfile需要创建集群
from mrjob.job import MRJob
class MRWordFrequencyCount(MRJob):
def mapper(self, _, line):
yield "chars", len(line)
yield "words", len(line.split())
yield "lines", 1
def reducer(self, key, values):
yield key, sum(values)
if __name__ == '__main__':
MRWordFrequencyCount.run()
这是最常用的词来运行在Amazon EC2实例一我mrjob.conf文件:
runners:
emr:
aws_access_key_id: XXXXXXXXXXXXXXXXXX
aws_secret_access_key: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
aws_region: us-west-1
ec2_key_pair: EMR
ec2_key_pair_file: ~/EMR.pem # ~/ and $ENV_VARS allowed here
ssh_tunnel_to_job_tracker: true
当我运行该脚本:
python MRMostUsedWord.py -r emr romeo.txt > most_used_word.out
我得到以下错误:
<Error>
<Type>Sender</Type>
<Code>ValidationError</Code>
<Message>InstanceProfile is required for creating cluster</Message>
</Error>
<RequestId>4d1a1e3b-e665-11e4-b9e1-a557982e1081</RequestId>
</ErrorResponse>
你知道为什么我得到这个错误吗?
aws emr create-default-roles
也许mrjob.conf文件需要修改:
我使用该命令还创建实例配置文件?但我不知道如何?