{"action":"created","comment":{"url":"https://api.github.com/repos/apache/flink/pulls/comments/205319945","pull_request_review_id":140560103,"id":205319945,"node_id":"MDI0OlB1bGxSZXF1ZXN0UmV2aWV3Q29tbWVudDIwNTMxOTk0NQ==","diff_hunk":"@@ -108,6 +108,17 @@ object ScalarFunctions {\n     }\n   }\n \n+  /**\n+    * Returns the logarithm of \"x\" with base \"2\".","path":"flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/functions/ScalarFunctions.scala","position":5,"original_position":5,"commit_id":"1883e0cac63a4756523cc798a9fc150c0f2c298d","original_commit_id":"1883e0cac63a4756523cc798a9fc150c0f2c298d","user":{"login":"xccui","id":1452518,"node_id":"MDQ6VXNlcjE0NTI1MTg=","avatar_url":"https://avatars0.githubusercontent.com/u/1452518?v=4","gravatar_id":"","url":"https://api.github.com/users/xccui","html_url":"https://github.com/xccui","followers_url":"https://api.github.com/users/xccui/followers","following_url":"https://api.github.com/users/xccui/following{/other_user}","gists_url":"https://api.github.com/users/xccui/gists{/gist_id}","starred_url":"https://api.github.com/users/xccui/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/xccui/subscriptions","organizations_url":"https://api.github.com/users/xccui/orgs","repos_url":"https://api.github.com/users/xccui/repos","events_url":"https://api.github.com/users/xccui/events{/privacy}","received_events_url":"https://api.github.com/users/xccui/received_events","type":"User","site_admin":false},"body":"... with base **2**.","created_at":"2018-07-26T03:09:58Z","updated_at":"2018-07-26T03:21:53Z","html_url":"https://github.com/apache/flink/pull/6404#discussion_r205319945","pull_request_url":"https://api.github.com/repos/apache/flink/pulls/6404","author_association":"MEMBER","_links":{"self":{"href":"https://api.github.com/repos/apache/flink/pulls/comments/205319945"},"html":{"href":"https://github.com/apache/flink/pull/6404#discussion_r205319945"},"pull_request":{"href":"https://api.github.com/repos/apache/flink/pulls/6404"}}},"pull_request":{"url":"https://api.github.com/repos/apache/flink/pulls/6404","id":203492090,"node_id":"MDExOlB1bGxSZXF1ZXN0MjAzNDkyMDkw","html_url":"https://github.com/apache/flink/pull/6404","diff_url":"https://github.com/apache/flink/pull/6404.diff","patch_url":"https://github.com/apache/flink/pull/6404.patch","issue_url":"https://api.github.com/repos/apache/flink/issues/6404","number":6404,"state":"open","locked":false,"title":"[FLINK-9928] Add LOG2 function for table/sql API","user":{"login":"yanghua","id":2283778,"node_id":"MDQ6VXNlcjIyODM3Nzg=","avatar_url":"https://avatars3.githubusercontent.com/u/2283778?v=4","gravatar_id":"","url":"https://api.github.com/users/yanghua","html_url":"https://github.com/yanghua","followers_url":"https://api.github.com/users/yanghua/followers","following_url":"https://api.github.com/users/yanghua/following{/other_user}","gists_url":"https://api.github.com/users/yanghua/gists{/gist_id}","starred_url":"https://api.github.com/users/yanghua/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yanghua/subscriptions","organizations_url":"https://api.github.com/users/yanghua/orgs","repos_url":"https://api.github.com/users/yanghua/repos","events_url":"https://api.github.com/users/yanghua/events{/privacy}","received_events_url":"https://api.github.com/users/yanghua/received_events","type":"User","site_admin":false},"body":"## What is the purpose of the change\r\n\r\n*This pull request adds LOG2 function for table/sql API*\r\n\r\n## Brief change log\r\n\r\n  - *Add LOG2 function for table/sql API*\r\n\r\n## Verifying this change\r\n\r\nThis change is already covered by existing tests, such as *ScalarFunctionsTest#testLog2*.\r\n\r\n## Does this pull request potentially affect one of the following parts:\r\n\r\n  - Dependencies (does it add or upgrade a dependency): (yes / **no**)\r\n  - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**)\r\n  - The serializers: (yes / **no** / don't know)\r\n  - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know)\r\n  - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)\r\n  - The S3 file system connector: (yes / **no** / don't know)\r\n\r\n## Documentation\r\n\r\n  - Does this pull request introduce a new feature? (**yes** / no)\r\n  - If yes, how is the feature documented? (not applicable / **docs** / JavaDocs / not 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