MaxGekk commented on a change in pull request #22721:
URL: https://github.com/apache/spark/pull/22721#discussion_r554586011
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/CommandUtils.scala
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@@ -50,6 +50,9 @@ object CommandUtils extends Logging {
catalog.alterTableStats(table.identifier, Some(newStats))
} else if (table.stats.nonEmpty) {
catalog.alterTableStats(table.identifier, None)
+ } else {
+ // In other cases, we still need to invalidate the table relation cache.
Review comment:
Could you explain why we need to refresh table while updating stats,
please. For instance, we can do the same work twice. See:
1. InsertIntoHiveTable:
https://github.com/apache/spark/blob/157b72ac9fa0057d5fd6d7ed52a6c4b22ebd1dfc/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/InsertIntoHiveTable.scala#L113-L115
2. LoadDataCommand :
https://github.com/apache/spark/blob/ddc0d5148ac6decde160cca847b5db5d6de1be58/sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala#L394-L396
3. AlterTableDropPartitionCommand:
https://github.com/apache/spark/blob/e0e06c18fd479ac86963ec26ab82b0dc5536bc83/sql/core/src/main/scala/org/apache/spark/sql/execution/command/ddl.scala#L586-L587
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