{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/155145566","pull_request_review_id":81414981,"id":155145566,"diff_hunk":"@@ -602,23 +602,36 @@ case class Least(children: Seq[Expression]) extends Expression {\n \n   override def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = {\n     val evalChildren = children.map(_.genCode(ctx))\n-    ctx.addMutableState(ctx.JAVA_BOOLEAN, ev.isNull)\n-    ctx.addMutableState(ctx.javaType(dataType), ev.value)\n-    def updateEval(eval: ExprCode): String = {\n+    val isNull = ctx.freshName(\"leastTmpIsNull\")","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala","position":7,"original_position":7,"commit_id":"facaf1cda0fae41c86a860265b562f38acd63605","original_commit_id":"facaf1cda0fae41c86a860265b562f38acd63605","user":{"login":"viirya","id":68855,"avatar_url":"https://avatars1.githubusercontent.com/u/68855?v=4","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"body":"`isNull`, `ev.isNull` and `eval.isNull` looks too close.","created_at":"2017-12-06T04:41:51Z","updated_at":"2017-12-06T04:41:51Z","html_url":"https://github.com/apache/spark/pull/19899#discussion_r155145566","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/19899","author_association":"CONTRIBUTOR","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/155145566"},"html":{"href":"https://github.com/apache/spark/pull/19899#discussion_r155145566"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/19899"}},"in_reply_to_id":155145502},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/19899","id":156500921,"html_url":"https://github.com/apache/spark/pull/19899","diff_url":"https://github.com/apache/spark/pull/19899.diff","patch_url":"https://github.com/apache/spark/pull/19899.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/19899","number":19899,"state":"open","locked":false,"title":"[SPARK-22704][SQL] Least and Greatest use less global variables","user":{"login":"kiszk","id":1315079,"avatar_url":"https://avatars2.githubusercontent.com/u/1315079?v=4","gravatar_id":"","url":"https://api.github.com/users/kiszk","html_url":"https://github.com/kiszk","followers_url":"https://api.github.com/users/kiszk/followers","following_url":"https://api.github.com/users/kiszk/following{/other_user}","gists_url":"https://api.github.com/users/kiszk/gists{/gist_id}","starred_url":"https://api.github.com/users/kiszk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kiszk/subscriptions","organizations_url":"https://api.github.com/users/kiszk/orgs","repos_url":"https://api.github.com/users/kiszk/repos","events_url":"https://api.github.com/users/kiszk/events{/privacy}","received_events_url":"https://api.github.com/users/kiszk/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\n\r\nThis PR accomplishes the following two items.\r\n\r\n1. Reduce # of global variables from two to one\r\n2. Make lifetime of global variable local within an operation\r\n  \r\nItem 1. reduces # of constant pool entries in a Java class. Item 2. ensures that an variable is not passed to arguments in a method split by `CodegenContext.splitExpressions()`, which is addressed by #19865.\r\n\r\n## How was this patch tested?\r\n\r\nAdded new test into `ArithmeticExpressionSuite`","created_at":"2017-12-05T15:55:30Z","updated_at":"2017-12-06T04:41:51Z","closed_at":null,"merged_at":null,"merge_commit_sha":"592e57284a82032d4f4efee8cd53ac856d36e799","assignee":null,"assignees":[],"requested_reviewers":[],"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/19899/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/19899/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/19899/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/facaf1cda0fae41c86a860265b562f38acd63605","head":{"label":"kiszk:SPARK-22704","ref":"SPARK-22704","sha":"facaf1cda0fae41c86a860265b562f38acd63605","user":{"login":"kiszk","id":1315079,"avatar_url":"https://avatars2.githubusercontent.com/u/1315079?v=4","gravatar_id":"","url":"https://api.github.com/users/kiszk","html_url":"https://github.com/kiszk","followers_url":"https://api.github.com/users/kiszk/followers","following_url":"https://api.github.com/users/kiszk/following{/other_user}","gists_url":"https://api.github.com/users/kiszk/gists{/gist_id}","starred_url":"https://api.github.com/users/kiszk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kiszk/subscriptions","organizations_url":"https://api.github.com/users/kiszk/orgs","repos_url":"https://api.github.com/users/kiszk/repos","events_url":"https://api.github.com/users/kiszk/events{/privacy}","received_events_url":"https://api.github.com/users/kiszk/received_events","type":"User","site_admin":false},"repo":{"id":45008789,"name":"spark","full_name":"kiszk/spark","owner":{"login":"kiszk","id":1315079,"avatar_url":"https://avatars2.githubusercontent.com/u/1315079?v=4","gravatar_id":"","url":"https://api.github.com/users/kiszk","html_url":"https://github.com/kiszk","followers_url":"https://api.github.com/users/kiszk/followers","following_url":"https://api.github.com/users/kiszk/following{/other_user}","gists_url":"https://api.github.com/users/kiszk/gists{/gist_id}","starred_url":"https://api.github.com/users/kiszk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kiszk/subscriptions","organizations_url":"https://api.github.com/users/kiszk/orgs","repos_url":"https://api.github.com/users/kiszk/repos","events_url":"https://api.github.com/users/kiszk/events{/privacy}","received_events_url":"https://api.github.com/users/kiszk/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/kiszk/spark","description":"Mirror of Apache Spark","fork":true,"url":"https://api.github.com/repos/kiszk/spark","forks_url":"https://api.github.com/repos/kiszk/spark/forks","keys_url":"https://api.github.com/repos/kiszk/spark/keys{/key_id}","collaborators_url":"https://api.github.com/repos/kiszk/spark/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/kiszk/spark/teams","hooks_url":"https://api.github.com/repos/kiszk/spark/hooks","issue_events_url":"https://api.github.com/repos/kiszk/spark/issues/events{/number}","events_url":"https://api.github.com/repos/kiszk/spark/events","assignees_url":"https://api.github.com/repos/kiszk/spark/assignees{/user}","branches_url":"https://api.github.com/repos/kiszk/spark/branches{/branch}","tags_url":"https://api.github.com/repos/kiszk/spark/tags","blobs_url":"https://api.github.com/repos/kiszk/spark/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/kiszk/spark/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/kiszk/spark/git/refs{/sha}","trees_url":"https://api.github.com/repos/kiszk/spark/git/trees{/sha}","statuses_url":"https://api.github.com/repos/kiszk/spark/statuses/{sha}","languages_url":"https://api.github.com/repos/kiszk/spark/languages","stargazers_url":"https://api.github.com/repos/kiszk/spark/stargazers","contributors_url":"https://api.github.com/repos/kiszk/spark/contributors","subscribers_url":"https://api.github.com/repos/kiszk/spark/subscribers","subscription_url":"https://api.github.com/repos/kiszk/spark/subscription","commits_url":"https://api.github.com/repos/kiszk/spark/commits{/sha}","git_commits_url":"https://api.github.com/repos/kiszk/spark/git/commits{/sha}","comments_url":"https://api.github.com/repos/kiszk/spark/comments{/number}","issue_comment_url":"https://api.github.com/repos/kiszk/spark/issues/comments{/number}","contents_url":"https://api.github.com/repos/kiszk/spark/contents/{+path}","compare_url":"https://api.github.com/repos/kiszk/spark/compare/{base}...{head}","merges_url":"https://api.github.com/repos/kiszk/spark/merges","archive_url":"https://api.github.com/repos/kiszk/spark/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/kiszk/spark/downloads","issues_url":"https://api.github.com/repos/kiszk/spark/issues{/number}","pulls_url":"https://api.github.com/repos/kiszk/spark/pulls{/number}","milestones_url":"https://api.github.com/repos/kiszk/spark/milestones{/number}","notifications_url":"https://api.github.com/repos/kiszk/spark/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/kiszk/spark/labels{/name}","releases_url":"https://api.github.com/repos/kiszk/spark/releases{/id}","deployments_url":"https://api.github.com/repos/kiszk/spark/deployments","created_at":"2015-10-27T01:25:07Z","updated_at":"2017-09-24T18:21:56Z","pushed_at":"2017-12-06T04:24:44Z","git_url":"git://github.com/kiszk/spark.git","ssh_url":"git@github.com:kiszk/spark.git","clone_url":"https://github.com/kiszk/spark.git","svn_url":"https://github.com/kiszk/spark","homepage":null,"size":260492,"stargazers_count":1,"watchers_count":1,"language":"Scala","has_issues":false,"has_projects":true,"has_downloads":true,"has_wiki":false,"has_pages":false,"forks_count":0,"mirror_url":null,"archived":false,"open_issues_count":1,"license":{"key":"apache-2.0","name":"Apache License 2.0","spdx_id":"Apache-2.0","url":"https://api.github.com/licenses/apache-2.0"},"forks":0,"open_issues":1,"watchers":1,"default_branch":"master"}},"base":{"label":"apache:master","ref":"master","sha":"ced6ccf0d6f362e299f270ed2a474f2e14f845da","user":{"login":"apache","id":47359,"avatar_url":"https://avatars0.githubusercontent.com/u/47359?v=4","gravatar_id":"","url":"https://api.github.com/users/apache","html_url":"https://github.com/apache","followers_url":"https://api.github.com/users/apache/followers","following_url":"https://api.github.com/users/apache/following{/other_user}","gists_url":"https://api.github.com/users/apache/gists{/gist_id}","starred_url":"https://api.github.com/users/apache/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/apache/subscriptions","organizations_url":"https://api.github.com/users/apache/orgs","repos_url":"https://api.github.com/users/apache/repos","events_url":"https://api.github.com/users/apache/events{/privacy}","received_events_url":"https://api.github.com/users/apache/received_events","type":"Organization","site_admin":false},"repo":{"id":17165658,"name":"spark","full_name":"apache/spark","owner":{"login":"apache","id":47359,"avatar_url":"https://avatars0.githubusercontent.com/u/47359?v=4","gravatar_id":"","url":"https://api.github.com/users/apache","html_url":"https://github.com/apache","followers_url":"https://api.github.com/users/apache/followers","following_url":"https://api.github.com/users/apache/following{/other_user}","gists_url":"https://api.github.com/users/apache/gists{/gist_id}","starred_url":"https://api.github.com/users/apache/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/apache/subscriptions","organizations_url":"https://api.github.com/users/apache/orgs","repos_url":"https://api.github.com/users/apache/repos","events_url":"https://api.github.com/users/apache/events{/privacy}","received_events_url":"https://api.github.com/users/apache/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/apache/spark","description":"Mirror of Apache Spark","fork":false,"url":"https://api.github.com/repos/apache/spark","forks_url":"https://api.github.com/repos/apache/spark/forks","keys_url":"https://api.github.com/repos/apache/spark/keys{/key_id}","collaborators_url":"https://api.github.com/repos/apache/spark/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/apache/spark/teams","hooks_url":"https://api.github.com/repos/apache/spark/hooks","issue_events_url":"https://api.github.com/repos/apache/spark/issues/events{/number}","events_url":"https://api.github.com/repos/apache/spark/events","assignees_url":"https://api.github.com/repos/apache/spark/assignees{/user}","branches_url":"https://api.github.com/repos/apache/spark/branches{/branch}","tags_url":"https://api.github.com/repos/apache/spark/tags","blobs_url":"https://api.github.com/repos/apache/spark/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/apache/spark/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/apache/spark/git/refs{/sha}","trees_url":"https://api.github.com/repos/apache/spark/git/trees{/sha}","statuses_url":"https://api.github.com/repos/apache/spark/statuses/{sha}","languages_url":"https://api.github.com/repos/apache/spark/languages","stargazers_url":"https://api.github.com/repos/apache/spark/stargazers","contributors_url":"https://api.github.com/repos/apache/spark/contributors","subscribers_url":"https://api.github.com/repos/apache/spark/subscribers","subscription_url":"https://api.github.com/repos/apache/spark/subscription","commits_url":"https://api.github.com/repos/apache/spark/commits{/sha}","git_commits_url":"https://api.github.com/repos/apache/spark/git/commits{/sha}","comments_url":"https://api.github.com/repos/apache/spark/comments{/number}","issue_comment_url":"https://api.github.com/repos/apache/spark/issues/comments{/number}","contents_url":"https://api.github.com/repos/apache/spark/contents/{+path}","compare_url":"https://api.github.com/repos/apache/spark/compare/{base}...{head}","merges_url":"https://api.github.com/repos/apache/spark/merges","archive_url":"https://api.github.com/repos/apache/spark/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/apache/spark/downloads","issues_url":"https://api.github.com/repos/apache/spark/issues{/number}","pulls_url":"https://api.github.com/repos/apache/spark/pulls{/number}","milestones_url":"https://api.github.com/repos/apache/spark/milestones{/number}","notifications_url":"https://api.github.com/repos/apache/spark/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/apache/spark/labels{/name}","releases_url":"https://api.github.com/repos/apache/spark/releases{/id}","deployments_url":"https://api.github.com/repos/apache/spark/deployments","created_at":"2014-02-25T08:00:08Z","updated_at":"2017-12-06T02:30:36Z","pushed_at":"2017-12-06T04:24:47Z","git_url":"git://github.com/apache/spark.git","ssh_url":"git@github.com:apache/spark.git","clone_url":"https://github.com/apache/spark.git","svn_url":"https://github.com/apache/spark","homepage":null,"size":267300,"stargazers_count":15357,"watchers_count":15357,"language":"Scala","has_issues":false,"has_projects":true,"has_downloads":true,"has_wiki":false,"has_pages":false,"forks_count":14243,"mirror_url":null,"archived":false,"open_issues_count":401,"license":{"key":"apache-2.0","name":"Apache License 2.0","spdx_id":"Apache-2.0","url":"https://api.github.com/licenses/apache-2.0"},"forks":14243,"open_issues":401,"watchers":15357,"default_branch":"master"}},"_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/19899"},"html":{"href":"https://github.com/apache/spark/pull/19899"},"issue":{"href":"https://api.github.com/repos/apache/spark/issues/19899"},"comments":{"href":"https://api.github.com/repos/apache/spark/issues/19899/comments"},"review_comments":{"href":"https://api.github.com/repos/apache/spark/pulls/19899/comments"},"review_comment":{"href":"https://api.github.com/repos/apache/spark/pulls/comments{/number}"},"commits":{"href":"https://api.github.com/repos/apache/spark/pulls/19899/commits"},"statuses":{"href":"https://api.github.com/repos/apache/spark/statuses/facaf1cda0fae41c86a860265b562f38acd63605"}},"author_association":"CONTRIBUTOR"}}
{"actor":{"display_login":"viirya"}}