好的，我的色调3.8指向了我的EMR群集，而且它主要起作用。有一点我想念的是我在这一点上真正关心的是火花笔记本
当我尝试为代码段选择语言时，会出现错误“ # implementing context manager
>>> class Person(object):
def __init__(self, name):
self.name = name
def __enter__(self):
# The value returned by this method is
# assigned to the variable after ``as``
return self
def __exit__(self, exc_type, exc_value, exc_traceback ):
# returns either True or False
# Don't raise any exceptions in this method
return True
>>> with Person("John Doe") as p:
print p.name
>>> "John Doe"
”并且日志会这样说：
No usable value for lang Did not find value which can be converted into java.lang.String (error 400)这是软件还是我的配置问题？
这可能与试图运行[03/Jun/2015 11:38:59 -0700] decorators ERROR error running <function create_session at 0x7fe30acd1d70>
Traceback (most recent call last):
File "/usr/local/hue/apps/spark/src/spark/decorators.py", line 77, in decorator
return func(*args, **kwargs)
File "/usr/local/hue/apps/spark/src/spark/api.py", line 44, in create_session
response['session'] = get_api(request.user, snippet).create_session(lang=snippet['type'])
File "/usr/local/hue/apps/spark/src/spark/models.py", line 284, in create_session
response = api.create_session(kind=lang)
File "/usr/local/hue/apps/spark/src/spark/job_server_api.py", line 87, in create_session
return self._root.post('sessions', data=json.dumps(kwargs), contenttype='application/json')
File "/usr/local/hue/desktop/core/src/desktop/lib/rest/resource.py", line 122, in post
return self.invoke("POST", relpath, params, data, self._make_headers(contenttype, headers))
File "/usr/local/hue/desktop/core/src/desktop/lib/rest/resource.py", line 78, in invoke
urlencode=self._urlencode)
File "/usr/local/hue/desktop/core/src/desktop/lib/rest/http_client.py", line 161, in execute
raise self._exc_class(ex)
RestException: No usable value for lang
Did not find value which can be converted into java.lang.String (error 400)
的事实有关：
sudo ./hue livy_serverspark-submit确实存在并且在路径中
答案 0 :(得分：0)
The
spark-submit
command comes from Spark, it needs to be present on the Hue machine.