wangyum commented on a change in pull request #22721:
[SPARK-19784][SPARK-25403][SQL] Refresh the table even table stats is empty
URL: https://github.com/apache/spark/pull/22721#discussion_r363190847
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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:
Yes.
https://github.com/apache/spark/blob/1743d5be7f74a5a7ab28dbc5c0f431cf2c2dfbc0/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala#L409-L422
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