Indhumathi27 commented on a change in pull request #4076:
URL: https://github.com/apache/carbondata/pull/4076#discussion_r561693339
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File path:
integration/spark/src/main/scala/org/apache/spark/sql/execution/command/view/CarbonDropMVCommand.scala
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@@ -90,6 +95,37 @@ case class CarbonDropMVCommand(
}
}
+ // Update the mvExists and related databases property to mv fact tables
+ schema.getRelatedTables.asScala.foreach { table =>
+ val dbName = table.getDatabaseName
+ val tableName = table.getTableName
+ try {
+ val carbonTable =
+ CarbonEnv.getCarbonTable(Some(dbName), tableName)(session)
+ val relatedMVTablesMap = carbonTable.getMVTablesMap
+ // check if database has materialized views or not
+ val anotherMVExistsInDb =
viewManager.getSchemas(databaseName).asScala.exists {
+ mvSchema =>
+
mvSchema.getRelatedTables.asScala.exists(_.getTableName.equalsIgnoreCase(tableName))
+ }
+ if (!anotherMVExistsInDb) {
+ // If database dont have any MV, then remove the database from
related tables
+ // property and update table property of fact table
+ relatedMVTablesMap.get(databaseName).remove(name)
+ if (relatedMVTablesMap.get(databaseName).isEmpty) {
+ relatedMVTablesMap.remove(databaseName)
+ }
+ CarbonIndexUtil.addOrModifyTableProperty(carbonTable,
+ Map("relatedMVTablesMap".toLowerCase -> new
Gson().toJson(relatedMVTablesMap)),
+ needLock = false)(session)
+ CarbonHiveIndexMetadataUtil.refreshTable(dbName, tableName,
session)
+ }
+ } catch {
+ case _: Exception =>
+ // ignore as table is a non-carbon table
Review comment:
This Exception is added, because for parquet and orc, carbon table will
not be present.
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