Coal Chan created SPARK-38230: --------------------------------- Summary: InsertIntoHadoopFsRelationCommand unnecessarily fetches details of partitions in most cases Key: SPARK-38230 URL: https://issues.apache.org/jira/browse/SPARK-38230 Project: Spark Issue Type: Improvement Components: SQL Affects Versions: 3.0.2 Reporter: Coal Chan
In `org.apache.spark.sql.execution.datasources. InsertIntoHadoopFsRelationCommand`, ` sparkSession.sessionState.catalog.listPartitions ` will call method `org.apache.hadoop.hive.metastore.listPartitionsPsWithAuth` of hive metastore client, this method will produce multiple queries on hive metastore db. When you insert into a table which has too many partitions(ie: 10k), it will produce too many queries on hive metastore db(ie: n * 10k = 10nk), it puts a lot of strain on the database. In fact, it calls method `listPartitions` in order to get locations of partitions and get `customPartitionLocations`. But in most cases, we do not have custom partitions, so we can just get partition names. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org