{"action":"opened","issue":{"url":"https://api.github.com/repos/Qiskit/aqua-chemistry/issues/57","repository_url":"https://api.github.com/repos/Qiskit/aqua-chemistry","labels_url":"https://api.github.com/repos/Qiskit/aqua-chemistry/issues/57/labels{/name}","comments_url":"https://api.github.com/repos/Qiskit/aqua-chemistry/issues/57/comments","events_url":"https://api.github.com/repos/Qiskit/aqua-chemistry/issues/57/events","html_url":"https://github.com/Qiskit/aqua-chemistry/issues/57","id":386162986,"node_id":"MDU6SXNzdWUzODYxNjI5ODY=","number":57,"title":"Multiprocessing pickle error with pluggable classes","user":{"login":"ss2165","id":12997250,"node_id":"MDQ6VXNlcjEyOTk3MjUw","avatar_url":"https://avatars0.githubusercontent.com/u/12997250?v=4","gravatar_id":"","url":"https://api.github.com/users/ss2165","html_url":"https://github.com/ss2165","followers_url":"https://api.github.com/users/ss2165/followers","following_url":"https://api.github.com/users/ss2165/following{/other_user}","gists_url":"https://api.github.com/users/ss2165/gists{/gist_id}","starred_url":"https://api.github.com/users/ss2165/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ss2165/subscriptions","organizations_url":"https://api.github.com/users/ss2165/orgs","repos_url":"https://api.github.com/users/ss2165/repos","events_url":"https://api.github.com/users/ss2165/events{/privacy}","received_events_url":"https://api.github.com/users/ss2165/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-11-30T12:12:22Z","updated_at":"2018-11-30T12:12:22Z","closed_at":null,"author_association":"NONE","body":"<!-- ⚠️ If you do not respect this template, your issue will be closed -->\r\n<!-- ⚠️ Make sure to browse the opened and closed issues -->\r\n\r\n### Informations\r\n\r\n- **Qiskit Aqua Chemistry version**:0.3.1\r\n- **Python version**:3.6.3\r\n- **Operating system**: macos 10.14.1\r\n\r\n### What is the current behavior?\r\nparallelising using multiprocessing involving any class fetched via get_pluggable_class fails because pickle fails to pickle these classes. Seems to work if they are imported normally.\r\n\r\n\r\n\r\n\r\n\r\n### Steps to reproduce the problem\r\ntry multiprocessing.Pool().map() with a function that is a method of an instance of class from get_pluggable_class\r\n\r\n\r\n### What is the expected behavior?\r\n\r\ngets pickled\r\n\r\n### Suggested solutions\r\n\r\n\r\n"}}
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