{"action":"created","issue":{"url":"https://api.github.com/repos/ray-project/ray/issues/2355","repository_url":"https://api.github.com/repos/ray-project/ray","labels_url":"https://api.github.com/repos/ray-project/ray/issues/2355/labels{/name}","comments_url":"https://api.github.com/repos/ray-project/ray/issues/2355/comments","events_url":"https://api.github.com/repos/ray-project/ray/issues/2355/events","html_url":"https://github.com/ray-project/ray/pull/2355","id":338755518,"node_id":"MDExOlB1bGxSZXF1ZXN0MTk5NjA5NjAx","number":2355,"title":"Improve error message when flex or bison is not installed","user":{"login":"pcmoritz","id":113316,"node_id":"MDQ6VXNlcjExMzMxNg==","avatar_url":"https://avatars1.githubusercontent.com/u/113316?v=4","gravatar_id":"","url":"https://api.github.com/users/pcmoritz","html_url":"https://github.com/pcmoritz","followers_url":"https://api.github.com/users/pcmoritz/followers","following_url":"https://api.github.com/users/pcmoritz/following{/other_user}","gists_url":"https://api.github.com/users/pcmoritz/gists{/gist_id}","starred_url":"https://api.github.com/users/pcmoritz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pcmoritz/subscriptions","organizations_url":"https://api.github.com/users/pcmoritz/orgs","repos_url":"https://api.github.com/users/pcmoritz/repos","events_url":"https://api.github.com/users/pcmoritz/events{/privacy}","received_events_url":"https://api.github.com/users/pcmoritz/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2018-07-05T23:16:25Z","updated_at":"2018-07-06T00:36:57Z","closed_at":null,"author_association":"CONTRIBUTOR","pull_request":{"url":"https://api.github.com/repos/ray-project/ray/pulls/2355","html_url":"https://github.com/ray-project/ray/pull/2355","diff_url":"https://github.com/ray-project/ray/pull/2355.diff","patch_url":"https://github.com/ray-project/ray/pull/2355.patch"},"body":"Without this patch, we get a cryptic error message if these are not installed:\r\n\r\n```\r\n    CMake Error at cmake_modules/FindParquet.cmake:67 (string):\r\n      string sub-command REGEX, mode MATCH needs at least 5 arguments total to\r\n      command.\r\n    Call Stack (most recent call first):\r\n      CMakeLists.txt:338 (find_package)\r\n    \r\n    \r\n    --  Could not find the parquet library. Looked in  system search paths.\r\n    CMake Error at CMakeLists.txt:341 (message):\r\n      Unable to locate Parquet libraries\r\n    \r\n    \r\n    -- Configuring incomplete, errors occurred!\r\n```\r\n\r\ncc @richardliaw "},"comment":{"url":"https://api.github.com/repos/ray-project/ray/issues/comments/402890794","html_url":"https://github.com/ray-project/ray/pull/2355#issuecomment-402890794","issue_url":"https://api.github.com/repos/ray-project/ray/issues/2355","id":402890794,"node_id":"MDEyOklzc3VlQ29tbWVudDQwMjg5MDc5NA==","user":{"login":"pcmoritz","id":113316,"node_id":"MDQ6VXNlcjExMzMxNg==","avatar_url":"https://avatars1.githubusercontent.com/u/113316?v=4","gravatar_id":"","url":"https://api.github.com/users/pcmoritz","html_url":"https://github.com/pcmoritz","followers_url":"https://api.github.com/users/pcmoritz/followers","following_url":"https://api.github.com/users/pcmoritz/following{/other_user}","gists_url":"https://api.github.com/users/pcmoritz/gists{/gist_id}","starred_url":"https://api.github.com/users/pcmoritz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pcmoritz/subscriptions","organizations_url":"https://api.github.com/users/pcmoritz/orgs","repos_url":"https://api.github.com/users/pcmoritz/repos","events_url":"https://api.github.com/users/pcmoritz/events{/privacy}","received_events_url":"https://api.github.com/users/pcmoritz/received_events","type":"User","site_admin":false},"created_at":"2018-07-06T00:36:57Z","updated_at":"2018-07-06T00:36:57Z","author_association":"CONTRIBUTOR","body":"retest this please"}}
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