在Mac上安裝DataPusher後ckan網站的不可逆，可重現的崩潰

Question

我試圖在我的MacBook Pro上運行OS X 10.10.3，在Homebrew的幫助下構建ckan（v2.3）數據門戶。雖然我不得不對官方文檔進行小小的調整，以便從源代碼工作中進行安裝，但我已經能夠使用Solr和Tomcat運行它，並且無需安裝DataStore和FileStore組件。我可以使用系統管理員帳戶上傳文件並再次下載，而不會出現任何問題。

問題是，當我嘗試安裝DataPusher以嘗試確保用戶上傳的數據自動放入DataStore中時。繼位於here指南中的「開發」部分導致一些非常奇怪的事情發生。

• 首先，雖然在我的設置資料儲存庫安裝「端口」變量設置爲默認值（8800）並沒有什麼阻止它在端口8800，實際的服務似乎堅持跑步通過港口8000.我不認爲這應該影響任何事情，但爲了記錄所有奇怪的行爲，我將它留在這裏。其次，只要我將ckan安裝的DataPusher url指向正確的端口，並在ckan的development.ini文件中啓用該應用程序及其所有默認設置，我的ckan安裝就會立即變得完全不可用。前頁面顯示正常，但每一次我嘗試登錄或註冊，因爲我得到這個回溯任何用戶（長度道歉）：

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File '/usr/lib/ckan/default/lib/python2.7/site-packages/weberror/evalexception.py', line 431 in respond 
    app_iter = self.application(environ, detect_start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/dec.py', line 147 in __call__ 
    resp = self.call_func(req, *args, **self.kwargs) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/dec.py', line 208 in call_func 
    return self.func(req, *args, **kwargs) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/fanstatic/publisher.py', line 234 in __call__ 
    return request.get_response(self.app) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/request.py', line 1053 in get_response 
    application, catch_exc_info=False) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/request.py', line 1022 in call_application 
    app_iter = application(self.environ, start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/dec.py', line 147 in __call__ 
    resp = self.call_func(req, *args, **self.kwargs) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/dec.py', line 208 in call_func 
    return self.func(req, *args, **kwargs) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/fanstatic/injector.py', line 54 in __call__ 
    response = request.get_response(self.app) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/request.py', line 1053 in get_response 
    application, catch_exc_info=False) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/webob/request.py', line 1022 in call_application 
    app_iter = application(self.environ, start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/beaker/middleware.py', line 73 in __call__ 
    return self.app(environ, start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/beaker/middleware.py', line 155 in __call__ 
    return self.wrap_app(environ, session_start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/routes/middleware.py', line 131 in __call__ 
    response = self.app(environ, start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/pylons/wsgiapp.py', line 125 in __call__ 
    response = self.dispatch(controller, environ, start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/pylons/wsgiapp.py', line 324 in dispatch 
    return controller(environ, start_response) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/lib/base.py', line 338 in __call__ 
    res = WSGIController.__call__(self, environ, start_response) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/pylons/controllers/core.py', line 221 in __call__ 
    response = self._dispatch_call() 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/pylons/controllers/core.py', line 172 in _dispatch_call 
    response = self._inspect_call(func) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/pylons/controllers/core.py', line 107 in _inspect_call 
    result = self._perform_call(func, args) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/pylons/controllers/core.py', line 60 in _perform_call 
    return func(**args) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/controllers/home.py', line 182 in index 
    return base.render('home/index.html', cache_force=True) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/lib/base.py', line 217 in render 
    loader_class=loader_class) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/pylons/templating.py', line 249 in cached_template 
    return render_func() 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/lib/base.py', line 155 in render_template 
    return render_jinja2(template_name, globs) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/lib/base.py', line 104 in render_jinja2 
    return template.render(**extra_vars) 
File '/usr/lib/ckan/default/lib/python2.7/site-packages/jinja2/environment.py', line 894 in render 
    return self.environment.handle_exception(exc_info, True) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/home/index.html', line 2 in top-level template code 
    {% set homepage_style = (g.homepage_style or '1') %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/page.html', line 1 in top-level template code 
    {% extends "base.html" %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/base.html', line 103 in top-level template code 
    {%- block page %}{% endblock -%} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/page.html', line 14 in block "page" 
    {%- block header %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/page.html', line 15 in block "header" 
    {% include "header.html" %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/header.html', line 1 in top-level template code 
    {% block header_wrapper %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/header.html', line 2 in block "header_wrapper" 
    {% block header_account %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/header.html', line 5 in block "header_account" 
    {% block header_account_container_content %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/header.html', line 9 in block "header_account_container_content" 
    {% block header_account_logged %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/templates/header.html', line 23 in block "header_account_logged" 
    {% set new_activities = h.new_activities() %} 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/lib/helpers.py', line 1855 in new_activities 
    return action({}, {}) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/logic/__init__.py', line 424 in wrapped 
    result = _action(context, data_dict, **kw) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/logic/action/get.py', line 3259 in dashboard_new_activities_count 
    context, data_dict) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/logic/__init__.py', line 424 in wrapped 
    result = _action(context, data_dict, **kw) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/logic/__init__.py', line 510 in wrapper 
    return action(context, data_dict) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/logic/action/get.py', line 3190 in dashboard_activity_list 
    limit=limit, offset=offset) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/model/activity.py', line 298 in dashboard_activity_list 
    q = _dashboard_activity_query(user_id, limit + offset) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/model/activity.py', line 283 in _dashboard_activity_query 
    q1 = _user_activity_query(user_id, limit) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/model/activity.py', line 126 in _user_activity_query 
    return _activities_union_all(q1, q2) 
File '/Users/<user>/ckan/lib/default/src/ckan/ckan/model/activity.py', line 96 in _activities_union_all 
    return model.Session.query(model.Activity).select_entity_from(
AttributeError: 'Query' object has no attribute 'select_entity_from' 

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這似乎是與用戶最近的活動顯示方式有關，但之後我不知道發生了什麼。常識似乎決定我可以禁用插件，事情會再次好起來，但可悲的是，情況並非如此。即使我從ini文件中的DataPusher插件斷開並完全停止服務，該錯誤仍然存​​在。它有效地破壞了我的整個ckan安裝，而且我能夠重新開始工作的唯一方法就是再次從源代碼安裝ckan。

這是第一次發生這似乎是一種僥倖。我發現在我的數據庫中必須損壞某些東西，所以我卸載了ckan，刪除了所有的PostgreSQL數據庫，並重新安裝了一個乾淨的版本。同樣的事情發生了。如果任何人能夠幫助我理解爲什麼會出現這種錯誤，並且更廣泛地說明爲什麼安裝DataPusher會永久破壞我的ckan網站，我將非常感激。感謝你的協助。

Answer 1

所以這個問題似乎是使用正常的ckan文檔從源代碼安裝導致我走錯了路。他們的安裝仍然會安裝SQLAlchemy相關插件的幾個錯誤版本。按照說明here爲我解決並消除了這次事故。我會建議任何維護ckan源碼的人檢查SQLAlchemy 0.8是否是自動安裝的版本，而不是0.7.8。感謝Mikko Ohtamaa的幫助。