XuQianJin-Stars commented on a change in pull request #4455:
URL: https://github.com/apache/hudi/pull/4455#discussion_r775731656
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File path:
hudi-spark-datasource/hudi-spark/src/main/scala/org/apache/spark/sql/hudi/command/DropHoodieTableCommand.scala
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@@ -85,25 +91,42 @@ case class DropHoodieTableCommand(
}
private def dropHiveDataSourceTable(
- sparkSession: SparkSession,
- table: CatalogTable,
- ifExists: Boolean,
- purge: Boolean): Unit = {
+ sparkSession: SparkSession,
+ hoodieCatalogTable: HoodieCatalogTable): Unit = {
+ val table = hoodieCatalogTable.table
val dbName = table.identifier.database.get
val tableName = table.identifier.table
+
// check database exists
val dbExists = sparkSession.sessionState.catalog.databaseExists(dbName)
if (!dbExists) {
throw new NoSuchDatabaseException(dbName)
}
- // check table exists
- if (!sparkSession.sessionState.catalog.tableExists(table.identifier)) {
- throw new NoSuchTableException(dbName, table.identifier.table)
+
+ if (HoodieTableType.MERGE_ON_READ == hoodieCatalogTable.tableType &&
purge) {
+ val snapshotTableName = hoodieCatalogTable.tableName +
SUFFIX_SNAPSHOT_TABLE
+ val roTableName = hoodieCatalogTable.tableName +
SUFFIX_READ_OPTIMIZED_TABLE
+
+ dropHiveTable(sparkSession, dbName, snapshotTableName)
+ dropHiveTable(sparkSession, dbName, roTableName)
+ dropHiveTable(sparkSession, dbName, hoodieCatalogTable.tableName, purge)
Review comment:
> why still need the original tableName?
Because purge deletes the directory of the original table. Spark's mor table
has the original table first, and two other tables are created when inserting
data.
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