Question

我目前正在尝试学习mrjob以及如何在AWS EMR中实现它，所以请原谅我，如果我问已经问过问题[搜索了很多地方但没有找到答案]，对不起，如果这是一个愚蠢的问题

这是我的python脚本：

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()

当我在本地模式下运行时，我得到了结果

CMD：

python sample.py input.txt

所以我试图在EMR中运行它

创建mrjob.conf文件

看起来像这样：

runners:
  emr:
    aws_access_key_id: 
    aws_secret_access_key: 
    aws_region: us-west-2a
    ec2_key_pair: emr
    ec2_key_pair_file: ~/Desktop/emr.pem
    ec2_instance_type: m1.small
    num_ec2_instances: 5

  local:
    base_tmp_dir: /tmp

首次尝试

在我的Windows系统上本地试用

python check.py -r emr --conf-path ./mrjob.conf  word.txt

注意：

当我将输入保留在s3位置并将其作为参数

时，出现了同样的错误

我得到了这个追溯：

Traceback (most recent call last):
  File "check.py", line 16, in <module>
    MRWordFrequencyCount.run()
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\job.py", line 461, in run
    mr_job.execute()
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\job.py", line 479, in execute
    super(MRJob, self).execute()
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\launch.py", line 153, in execute
    self.run_job()
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\launch.py", line 215, in run_job
    with self.make_runner() as runner:
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\job.py", line 502, in make_runner
    return super(MRJob, self).make_runner()
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\launch.py", line 168, in make_runner
    return EMRJobRunner(**self.emr_job_runner_kwargs())
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\emr.py", line 643, in __init__
    self._fix_s3_scratch_and_log_uri_opts()
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\emr.py", line 760, in _fix_s3_scratch_and_log_uri_opts
    self._set_s3_scratch_uri(s3_conn)
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\emr.py", line 776, in _set_s3_scratch_uri
    buckets = s3_conn.get_all_buckets()
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\mrjob\retry.py", line 149, in call_and_maybe_retry
    return f(*args, **kwargs)
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\boto\s3\connection.py", line 436, in get_all_buckets
    response = self.make_request('GET', headers=headers)
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\boto\s3\connection.py", line 664, in make_request
    retry_handler=retry_handler
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\boto\connection.py", line 1070, in make_request
    retry_handler=retry_handler)
  File "C:\Users\MOB140003207\AppData\Local\Enthought\Canopy32\User\lib\site-pac
kages\boto\connection.py", line 1029, in _mexe
    raise ex
socket.gaierror: [Errno 11004] getaddrinfo failed

当我尝试在aws EC2实例中运行它时

我收到了这个错误

 Traceback (most recent call last):
  File "check.py", line 16, in <module>
    MRWordFrequencyCount.run()
  File "/usr/local/lib/python2.7/dist-packages/mrjob/job.py", line 461, in run
    mr_job.execute()
  File "/usr/local/lib/python2.7/dist-packages/mrjob/job.py", line 479, in execute
    super(MRJob, self).execute()
  File "/usr/local/lib/python2.7/dist-packages/mrjob/launch.py", line 153, in execute
    self.run_job()
  File "/usr/local/lib/python2.7/dist-packages/mrjob/launch.py", line 215, in run_job
    with self.make_runner() as runner:
  File "/usr/local/lib/python2.7/dist-packages/mrjob/job.py", line 502, in make_runner
    return super(MRJob, self).make_runner()
  File "/usr/local/lib/python2.7/dist-packages/mrjob/launch.py", line 168, in make_runner
    return EMRJobRunner(**self.emr_job_runner_kwargs())
  File "/usr/local/lib/python2.7/dist-packages/mrjob/emr.py", line 643, in __init__
    self._fix_s3_scratch_and_log_uri_opts()
  File "/usr/local/lib/python2.7/dist-packages/mrjob/emr.py", line 760, in _fix_s3_scratch_and_log_uri_opts
    self._set_s3_scratch_uri(s3_conn)
  File "/usr/local/lib/python2.7/dist-packages/mrjob/emr.py", line 776, in _set_s3_scratch_uri
    buckets = s3_conn.get_all_buckets()
  File "/usr/local/lib/python2.7/dist-packages/mrjob/retry.py", line 149, in call_and_maybe_retry
    return f(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/boto/s3/connection.py", line 436, in get_all_buckets
    response = self.make_request('GET', headers=headers)
  File "/usr/local/lib/python2.7/dist-packages/boto/s3/connection.py", line 664, in make_request
    retry_handler=retry_handler
  File "/usr/local/lib/python2.7/dist-packages/boto/connection.py", line 1071, in make_request
    retry_handler=retry_handler)
  File "/usr/local/lib/python2.7/dist-packages/boto/connection.py", line 1030, in _mexe
    raise ex
socket.gaierror: [Errno -2] Name or service not known

我不知道我做错了什么

python版本2.7 mrjob版本'0.4.5'

Answer 1

经过数小时的搜索和调查，我发现了问题

就在这一行

aws_region: us-west-2a

应该在哪里

aws_region: us-west-2

我只想保持这个问题，因为它可以节省其他人的时间

尝试使用python mrjob运行emr时socket.gaierror

1 个答案: