{"action":"closed","number":13367,"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/13367","id":71781248,"html_url":"https://github.com/apache/spark/pull/13367","diff_url":"https://github.com/apache/spark/pull/13367.diff","patch_url":"https://github.com/apache/spark/pull/13367.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/13367","number":13367,"state":"closed","locked":false,"title":"[SPARK-15636][SQL] Make aggregate expressions more concise in explain","user":{"login":"rxin","id":323388,"avatar_url":"https://avatars.githubusercontent.com/u/323388?v=3","gravatar_id":"","url":"https://api.github.com/users/rxin","html_url":"https://github.com/rxin","followers_url":"https://api.github.com/users/rxin/followers","following_url":"https://api.github.com/users/rxin/following{/other_user}","gists_url":"https://api.github.com/users/rxin/gists{/gist_id}","starred_url":"https://api.github.com/users/rxin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rxin/subscriptions","organizations_url":"https://api.github.com/users/rxin/orgs","repos_url":"https://api.github.com/users/rxin/repos","events_url":"https://api.github.com/users/rxin/events{/privacy}","received_events_url":"https://api.github.com/users/rxin/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\nThis patch reduces the verbosity of aggregate expressions in explain (but does not actually remove any information). As an example, for the following command:\r\n```\r\nspark.range(10).selectExpr(\"sum(id) + 1\", \"count(distinct id)\").explain(true)\r\n```\r\n\r\nOutput before this patch:\r\n```\r\n== Physical Plan ==\r\n*TungstenAggregate(key=[], functions=[(sum(id#0L),mode=Final,isDistinct=false),(count(id#0L),mode=Final,isDistinct=true)], output=[(sum(id) + 1)#3L,count(DISTINCT id)#16L])\r\n+- Exchange SinglePartition, None\r\n   +- *TungstenAggregate(key=[], functions=[(sum(id#0L),mode=PartialMerge,isDistinct=false),(count(id#0L),mode=Partial,isDistinct=true)], output=[sum#18L,count#21L])\r\n      +- *TungstenAggregate(key=[id#0L], functions=[(sum(id#0L),mode=PartialMerge,isDistinct=false)], output=[id#0L,sum#18L])\r\n         +- Exchange hashpartitioning(id#0L, 5), None\r\n            +- *TungstenAggregate(key=[id#0L], functions=[(sum(id#0L),mode=Partial,isDistinct=false)], output=[id#0L,sum#18L])\r\n               +- *Range (0, 10, splits=2)\r\n```\r\n\r\nOutput after this patch:\r\n```\r\n== Physical Plan ==\r\n*TungstenAggregate(key=[], functions=[sum(id#0L),count(distinct id#0L)], output=[(sum(id) + 1)#3L,count(DISTINCT id)#16L])\r\n+- Exchange SinglePartition, None\r\n   +- *TungstenAggregate(key=[], functions=[merge_sum(id#0L),partial_count(distinct id#0L)], output=[sum#18L,count#21L])\r\n      +- *TungstenAggregate(key=[id#0L], functions=[merge_sum(id#0L)], output=[id#0L,sum#18L])\r\n         +- Exchange hashpartitioning(id#0L, 5), None\r\n            +- *TungstenAggregate(key=[id#0L], functions=[partial_sum(id#0L)], output=[id#0L,sum#18L])\r\n               +- *Range (0, 10, splits=2)\r\n```\r\n\r\nNote the change from `(sum(id#0L),mode=PartialMerge,isDistinct=false)` to `merge_sum(id#0L)`.\r\n\r\nIn general aggregate explain is still very verbose, but further work will be done as follow-up pull requests. \r\n\r\n## How was this patch tested?\r\nTested 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