Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/13156#discussion_r63757822 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/ddl.scala --- @@ -126,24 +126,9 @@ case class RefreshTable(tableIdent: TableIdentifier) extends RunnableCommand { override def run(sparkSession: SparkSession): Seq[Row] = { - // Refresh the given table's metadata first. - sparkSession.sessionState.catalog.refreshTable(tableIdent) - - // If this table is cached as a InMemoryColumnarRelation, drop the original - // cached version and make the new version cached lazily. - val logicalPlan = sparkSession.sessionState.catalog.lookupRelation(tableIdent) - // Use lookupCachedData directly since RefreshTable also takes databaseName. - val isCached = sparkSession.cacheManager.lookupCachedData(logicalPlan).nonEmpty - if (isCached) { - // Create a data frame to represent the table. - // TODO: Use uncacheTable once it supports database name. - val df = Dataset.ofRows(sparkSession, logicalPlan) - // Uncache the logicalPlan. - sparkSession.cacheManager.tryUncacheQuery(df, blocking = true) - // Cache it again. - sparkSession.cacheManager.cacheQuery(df, Some(tableIdent.table)) - } --- End diff -- The above logics are moved to `sparkSession.catalog.refreshTable`
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