GitHub PullRequestEvent at 2014-10-11 02:51:01
Repository: spark
Actor: witgo
Payload: {"action":"reopened","number":2388,"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/2388","id":21205899,"html_url":"https://github.com/apache/spark/pull/2388","diff_url":"https://github.com/apache/spark/pull/2388.diff","patch_url":"https://github.com/apache/spark/pull/2388.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/2388","number":2388,"state":"open","locked":false,"title":"[WIP][SPARK-1405][MLLIB] topic modeling on Graphx","user":{"login":"witgo","id":302879,"avatar_url":"https://avatars.githubusercontent.com/u/302879?v=2","gravatar_id":"","url":"https://api.github.com/users/witgo","html_url":"https://github.com/witgo","followers_url":"https://api.github.com/users/witgo/followers","following_url":"https://api.github.com/users/witgo/following{/other_user}","gists_url":"https://api.github.com/users/witgo/gists{/gist_id}","starred_url":"https://api.github.com/users/witgo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/witgo/subscriptions","organizations_url":"https://api.github.com/users/witgo/orgs","repos_url":"https://api.github.com/users/witgo/repos","events_url":"https://api.github.com/users/witgo/events{/privacy}","received_events_url":"https://api.github.com/users/witgo/received_events","type":"User","site_admin":false},"body":"This PR relies on  #2631\r\n\r\n- [X] Topic de-duplication\r\n- [X] Support  100000 topics\r\n- [X] Asymmetric Dirichlet priors\r\n- [ ] Add the documentation\r\n- [X] Add infer interface\r\n- [X] Add unit tests\r\n- [X] Add the performance test \r\n- [X] Optimizing the infer interface performance\r\n- [ ] Verifying the correctness of the algorithm\r\n\r\n\r\nThe performance test:\r\n\r\n`2000` topics:\r\n\r\nItem | value\r\n------------ | -------------\r\nThe cluster resource | 36 executors(36 cores, 216g memory)\r\nThe corpus size | 253064 document, 29696335 words\r\nThe number of iterations | `105`\r\nThe number of distinct term |  75496\r\nThe number of topics |  `2000`\r\nalpha | 0.01\r\nbeta | 0.01\r\nThe running time |  37.1 minutes\r\n\r\n`10000` topics:\r\n\r\nItem | value\r\n------------ | -------------\r\nThe cluster resource | 36 executors(36 cores, 216g memory)\r\nThe corpus size | 253064 document, 29696335 words\r\nThe number of iterations | `105`\r\nThe number of distinct term |  75496\r\nThe number of topics |  `10000`\r\nalpha | 0.01\r\nbeta | 0.01\r\nThe running time |  49 minutes\r\n\r\n\r\n`100000` topics:\r\n\r\nItem | value\r\n------------ | -------------\r\nThe cluster resource | 36 executors(36 cores, 216g memory)\r\nThe corpus size | 253064 document, 29696335 words\r\nThe number of iterations | `105`\r\nThe number of distinct term |  75496\r\nThe number of topics |  `100000`\r\nalpha | 0.1\r\nbeta | 0.01\r\nThe running time |  268.9 minutes\r\n\r\nconf/spark-defaults.conf:\r\n```\r\nspark.akka.frameSize   20\r\nspark.executor.instances 36\r\nspark.rdd.compress true\r\nspark.executor.memory   6g\r\nspark.default.parallelism  72\r\nspark.broadcast.blockSize  8192\r\nspark.storage.memoryFraction 0.4\r\nspark.serializer org.apache.spark.serializer.KryoSerializer\r\nspark.kryo.registrator org.apache.spark.mllib.feature.TopicModelingKryoRegistrator\r\n```","created_at":"2014-09-14T16:57:02Z","updated_at":"2014-10-11T02:51:01Z","closed_at":null,"merged_at":null,"merge_commit_sha":"f5b44e0679e4d99fa760001d0026a411940086a7","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/2388/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/2388/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments/{number}","comments_url":"https://api.github.com/repos/apache/spark/issues/2388/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/ca8e6f296a2f7ed674dd3a5cde49d4301d3d6d14","head":{"label":"witgo:graphx_lda","ref":"graphx_lda","sha":"ca8e6f296a2f7ed674dd3a5cde49d4301d3d6d14","user":{"login":"witgo","id":302879,"avatar_url":"https://avatars.githubusercontent.com/u/302879?v=2","gravatar_id":"","url":"https://api.github.com/users/witgo","html_url":"https://github.com/witgo","followers_url":"https://api.github.com/users/witgo/followers","following_url":"https://api.github.com/users/witgo/following{/other_user}","gists_url":"https://api.github.com/users/witgo/gists{/gist_id}","starred_url":"https://api.github.com/users/witgo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/witgo/subscriptions","organizations_url":"https://api.github.com/users/witgo/orgs","repos_url":"https://api.github.com/users/witgo/repos","events_url":"https://api.github.com/users/witgo/events{/privacy}","received_events_url":"https://api.github.com/users/witgo/received_events","type":"User","site_admin":false},"repo":{"id":17201985,"name":"spark","full_name":"witgo/spark","owner":{"login":"witgo","id":302879,"avatar_url":"https://avatars.githubusercontent.com/u/302879?v=2","gravatar_id":"","url":"https://api.github.com/users/witgo","html_url":"https://github.com/witgo","followers_url":"https://api.github.com/users/witgo/followers","following_url":"https://api.github.com/users/witgo/following{/other_user}","gists_url":"https://api.github.com/users/witgo/gists{/gist_id}","starred_url":"https://api.github.com/users/witgo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/witgo/subscriptions","organizations_url":"https://api.github.com/users/witgo/orgs","repos_url":"https://api.github.com/users/witgo/repos","events_url":"https://api.github.com/users/witgo/events{/privacy}","received_events_url":"https://api.github.com/users/witgo/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/witgo/spark","description":"Mirror 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