{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/24621161","id":24621161,"diff_hunk":"@@ -381,12 +391,51 @@ private[hive] class HiveMetastoreCatalog(hive: HiveContext) extends Catalog with\n   }\n \n   /**\n+   * When scanning or writing to non-partitioned Metastore Parquet tables, convert them to Parquet\n+   * data source relations for better performance.\n+   */\n+  object ParquetConversions extends Rule[LogicalPlan] {\n+    override def apply(plan: LogicalPlan): LogicalPlan = {\n+      // Collects all `MetastoreRelation`s which should be replaced\n+      val toBeReplaced = plan.collect {\n+        case InsertIntoTable(relation: MetastoreRelation, _, _, _)\n+            // Inserting into partitioned table is not supported in Parquet data source (yet).\n+            if !relation.hiveQlTable.isPartitioned &&\n+              hive.convertMetastoreParquet &&\n+              hive.conf.parquetUseDataSourceApi &&\n+              relation.tableDesc.getSerdeClassName.toLowerCase.contains(\"parquet\") =>\n+          relation\n+\n+        case p @ PhysicalOperation(_, _, relation: MetastoreRelation)","path":"sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala","position":155,"original_position":155,"commit_id":"efcc8d2d0c22a0675e479068c41036256ba73d23","original_commit_id":"efcc8d2d0c22a0675e479068c41036256ba73d23","user":{"login":"yhuai","id":2072857,"avatar_url":"https://avatars.githubusercontent.com/u/2072857?v=3","gravatar_id":"","url":"https://api.github.com/users/yhuai","html_url":"https://github.com/yhuai","followers_url":"https://api.github.com/users/yhuai/followers","following_url":"https://api.github.com/users/yhuai/following{/other_user}","gists_url":"https://api.github.com/users/yhuai/gists{/gist_id}","starred_url":"https://api.github.com/users/yhuai/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yhuai/subscriptions","organizations_url":"https://api.github.com/users/yhuai/orgs","repos_url":"https://api.github.com/users/yhuai/repos","events_url":"https://api.github.com/users/yhuai/events{/privacy}","received_events_url":"https://api.github.com/users/yhuai/received_events","type":"User","site_admin":false},"body":"Add a comment to explain when this one will be triggered?","created_at":"2015-02-12T21:18:15Z","updated_at":"2015-02-12T21:18:15Z","html_url":"https://github.com/apache/spark/pull/4563#discussion_r24621161","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/4563","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/24621161"},"html":{"href":"https://github.com/apache/spark/pull/4563#discussion_r24621161"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/4563"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/4563","id":29168054,"html_url":"https://github.com/apache/spark/pull/4563","diff_url":"https://github.com/apache/spark/pull/4563.diff","patch_url":"https://github.com/apache/spark/pull/4563.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/4563","number":4563,"state":"open","locked":false,"title":"[SPARK-4553] [SPARK-5767] [SQL] Wires Parquet data source with the newly introduced write support for data source API","user":{"login":"liancheng","id":230655,"avatar_url":"https://avatars.githubusercontent.com/u/230655?v=3","gravatar_id":"","url":"https://api.github.com/users/liancheng","html_url":"https://github.com/liancheng","followers_url":"https://api.github.com/users/liancheng/followers","following_url":"https://api.github.com/users/liancheng/following{/other_user}","gists_url":"https://api.github.com/users/liancheng/gists{/gist_id}","starred_url":"https://api.github.com/users/liancheng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/liancheng/subscriptions","organizations_url":"https://api.github.com/users/liancheng/orgs","repos_url":"https://api.github.com/users/liancheng/repos","events_url":"https://api.github.com/users/liancheng/events{/privacy}","received_events_url":"https://api.github.com/users/liancheng/received_events","type":"User","site_admin":false},"body":"This PR migrates the Parquet data source to the new data source write support API.  Now users can also overwriting and appending to existing tables. Notice that inserting into partitioned tables is not supported yet.\r\n\r\nWhen Parquet data source is enabled, insertion to Hive Metastore Parquet tables is also fullfilled by the Parquet data source. This is done by the newly introduced `HiveMetastoreCatalog.ParquetConversions` rule, which is a \"proper\" implementation of the original hacky `HiveStrategies.ParquetConversion`. The latter is still preserved, and can be removed together with the old Parquet support in the future.\r\n\r\nTODO:\r\n\r\n- [ ] Update outdated comments in `newParquet.scala`.\r\n\r\n<!-- Reviewable:start -->\r\n[<img src=\"https://reviewable.io/review_button.png\" height=40 alt=\"Review on Reviewable\"/>](https://reviewable.io/reviews/apache/spark/4563)\r\n<!-- Reviewable:end 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