{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/69707869","id":69707869,"diff_hunk":"@@ -188,7 +188,7 @@ private[sql] object ParquetFilters {\n       fields.filter { f =>\n         !f.metadata.contains(StructType.metadataKeyForOptionalField) ||\n           !f.metadata.getBoolean(StructType.metadataKeyForOptionalField)\n-      }.map(f => f.name -> f.dataType) ++ fields.flatMap { f => getFieldMap(f.dataType) }\n+      }.map(f => f.name -> f.dataType)","path":"sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFilters.scala","position":5,"original_position":5,"commit_id":"ffaa666673e91a771f1d58267d085483ed68e56c","original_commit_id":"ffaa666673e91a771f1d58267d085483ed68e56c","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":"Sure!","created_at":"2016-07-06T10:30:50Z","updated_at":"2016-07-06T10:30:50Z","html_url":"https://github.com/apache/spark/pull/14067#discussion_r69707869","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/14067","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/69707869"},"html":{"href":"https://github.com/apache/spark/pull/14067#discussion_r69707869"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/14067"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/14067","id":76408611,"html_url":"https://github.com/apache/spark/pull/14067","diff_url":"https://github.com/apache/spark/pull/14067.diff","patch_url":"https://github.com/apache/spark/pull/14067.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/14067","number":14067,"state":"open","locked":false,"title":"[SPARK-16371][SQL] Do not push down filters incorrectly when inner name and outer name are the same in Parquet","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\nCurrently, if there is a schema as below:\r\n\r\n```\r\nroot\r\n  |-- _1: struct (nullable = true)\r\n  |    |-- _1: string (nullable = true)\r\n```\r\n\r\nand if we execute the codes below:\r\n\r\n```scala\r\ndf.filter(\"_1 IS NOT NULL\").count()\r\n```\r\n\r\nThis pushes down a filter although this filter is being applied to `StructType`.(If my understanding is correct, Spark does not pushes down filters for those).\r\n\r\nThe reason is, `ParquetFilters.getFieldMap` produces results below:\r\n\r\n```\r\n(_1,StructType(StructField(_1,IntegerType,true)))\r\n(_1,IntegerType)\r\n```\r\n\r\nand then it becomes a `Map`\r\n\r\n```\r\n(_1,IntegerType)\r\n```\r\n\r\nNow, because of ` ....lift(dataTypeOf(name)).map(_(name, value))`, this pushes down filters for `_1` which Parquet thinks is `IntegerType`. However, it is actually `StructType`.\r\n\r\nSo, Parquet filter2 produces incorrect results, for example, the codes below:\r\n\r\n```\r\ndf.filter(\"_1 IS NOT NULL\").count()\r\n```\r\n\r\nproduces always 0.\r\n\r\n\r\nThis PR prevents this by not finding nested fields.\r\n\r\n## How was this patch tested?\r\n\r\nUnit test in `ParquetFilterSuite`.","created_at":"2016-07-06T10:13:24Z","updated_at":"2016-07-06T10:30:50Z","closed_at":null,"merged_at":null,"merge_commit_sha":"3722d0aa464a6af0b6760835b6e958be11a317db","assignee":null,"assignees":[],"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/14067/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/14067/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/14067/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/ffaa666673e91a771f1d58267d085483ed68e56c","head":{"label":"HyukjinKwon:SPARK-16371","ref":"SPARK-16371","sha":"ffaa666673e91a771f1d58267d085483ed68e56c","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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