{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/64022461","id":64022461,"diff_hunk":"@@ -11,3 +11,19 @@ include Rtools and R in `PATH`.\n directory in Maven in `PATH`.\n 4. Set `MAVEN_OPTS` as described in [Building Spark](http://spark.apache.org/docs/latest/building-spark.html).\n 5. Open a command shell (`cmd`) in the Spark directory and run `mvn -DskipTests -Psparkr package`\n+\n+##  Unit tests\n+\n+To run existing unit tests in SparkR on Windows, the following setps are required (the steps below suppose you are in Spark root directory)\n+\n+1. Set `HADOOP_HOME`.\n+2. Download `winutils.exe` and locate this in `$HADOOP_HOME/bin`. \n+\n+    It seems not requiring installing Hadoop but only this `winutils.exe`. It seems not included in Hadoop official binary releases so it should be built from source but it seems it is able to be downloaded from community (e.g. [steveloughran/winutils](https://github.com/steveloughran/winutils)).\n+\n+3. Run unit-tests for SparkR by running below (you need to install the [testthat](http://cran.r-project.org/web/packages/testthat/index.html) package first):","path":"R/WINDOWS.md","position":14,"original_position":14,"commit_id":"b62b631e98570b16d4d000e23b2e5928662ff941","original_commit_id":"b62b631e98570b16d4d000e23b2e5928662ff941","user":{"login":"srowen","id":822522,"avatar_url":"https://avatars.githubusercontent.com/u/822522?v=3","gravatar_id":"","url":"https://api.github.com/users/srowen","html_url":"https://github.com/srowen","followers_url":"https://api.github.com/users/srowen/followers","following_url":"https://api.github.com/users/srowen/following{/other_user}","gists_url":"https://api.github.com/users/srowen/gists{/gist_id}","starred_url":"https://api.github.com/users/srowen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/srowen/subscriptions","organizations_url":"https://api.github.com/users/srowen/orgs","repos_url":"https://api.github.com/users/srowen/repos","events_url":"https://api.github.com/users/srowen/events{/privacy}","received_events_url":"https://api.github.com/users/srowen/received_events","type":"User","site_admin":false},"body":"\"unit tests\" and \"by running the command below\". Again parenthetical can be a sentence. This step is already documented in R docs though.","created_at":"2016-05-20T10:47:26Z","updated_at":"2016-05-20T10:47:26Z","html_url":"https://github.com/apache/spark/pull/13217#discussion_r64022461","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/13217","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/64022461"},"html":{"href":"https://github.com/apache/spark/pull/13217#discussion_r64022461"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/13217"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/13217","id":70809608,"html_url":"https://github.com/apache/spark/pull/13217","diff_url":"https://github.com/apache/spark/pull/13217.diff","patch_url":"https://github.com/apache/spark/pull/13217.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/13217","number":13217,"state":"open","locked":false,"title":"[MINOR][SPARKR][DOC] Add a description for running unit tests in Windows","user":{"login":"HyukjinKwon","id":6477701,"avatar_url":"https://avatars.githubusercontent.com/u/6477701?v=3","gravatar_id":"","url":"https://api.github.com/users/HyukjinKwon","html_url":"https://github.com/HyukjinKwon","followers_url":"https://api.github.com/users/HyukjinKwon/followers","following_url":"https://api.github.com/users/HyukjinKwon/following{/other_user}","gists_url":"https://api.github.com/users/HyukjinKwon/gists{/gist_id}","starred_url":"https://api.github.com/users/HyukjinKwon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/HyukjinKwon/subscriptions","organizations_url":"https://api.github.com/users/HyukjinKwon/orgs","repos_url":"https://api.github.com/users/HyukjinKwon/repos","events_url":"https://api.github.com/users/HyukjinKwon/events{/privacy}","received_events_url":"https://api.github.com/users/HyukjinKwon/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\n\r\nThis PR adds the description for running unit tests in Windows.\r\n\r\n## How was this patch tested?\r\n\r\nOn a bare machine (Window 7, 32bits), this was manually built and tested.\r\n","created_at":"2016-05-20T07:00:16Z","updated_at":"2016-05-20T10:47:26Z","closed_at":null,"merged_at":null,"merge_commit_sha":"133982b3a08a4332fa8a443cfa94801f7dffaa5a","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/13217/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/13217/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/13217/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/b62b631e98570b16d4d000e23b2e5928662ff941","head":{"label":"HyukjinKwon:minor-r-doc","ref":"minor-r-doc","sha":"b62b631e98570b16d4d000e23b2e5928662ff941","user":{"login":"HyukjinKwon","id":6477701,"avatar_url":"https://avatars.githubusercontent.com/u/6477701?v=3","gravatar_id":"","url":"https://api.github.com/users/HyukjinKwon","html_url":"https://github.com/HyukjinKwon","followers_url":"https://api.github.com/users/HyukjinKwon/followers","following_url":"https://api.github.com/users/HyukjinKwon/following{/other_user}","gists_url":"https://api.github.com/users/HyukjinKwon/gists{/gist_id}","starred_url":"https://api.github.com/users/HyukjinKwon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/HyukjinKwon/subscriptions","organizations_url":"https://api.github.com/users/HyukjinKwon/orgs","repos_url":"https://api.github.com/users/HyukjinKwon/repos","events_url":"https://api.github.com/users/HyukjinKwon/events{/privacy}","received_events_url":"https://api.github.com/users/HyukjinKwon/received_events","type":"User","site_admin":false},"repo":{"id":42300713,"name":"spark","full_name":"HyukjinKwon/spark","owner":{"login":"HyukjinKwon","id":6477701,"avatar_url":"https://avatars.githubusercontent.com/u/6477701?v=3","gravatar_id":"","url":"https://api.github.com/users/HyukjinKwon","html_url":"https://github.com/HyukjinKwon","followers_url":"https://api.github.com/users/HyukjinKwon/followers","following_url":"https://api.github.com/users/HyukjinKwon/following{/other_user}","gists_url":"https://api.github.com/users/HyukjinKwon/gists{/gist_id}","starred_url":"https://api.github.com/users/HyukjinKwon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/HyukjinKwon/subscriptions","organizations_url":"https://api.github.com/users/HyukjinKwon/orgs","repos_url":"https://api.github.com/users/HyukjinKwon/repos","events_url":"https://api.github.com/users/HyukjinKwon/events{/privacy}","received_events_url":"https://api.github.com/users/HyukjinKwon/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/HyukjinKwon/spark","description":"Mirror 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