ulysses-you commented on a change in pull request #29034:
URL: https://github.com/apache/spark/pull/29034#discussion_r521751393
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala
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@@ -863,7 +864,12 @@ case class ShowTablesCommand(
// Show the information of tables.
val tables =
tableIdentifierPattern.map(catalog.listTables(db,
_)).getOrElse(catalog.listTables(db))
- tables.map { tableIdent =>
+ val filterCachedTables = if (showCached) {
+ tables.filter(table =>
sparkSession.catalog.isCached(table.quotedString))
Review comment:
Based on current implementation of cache, we only cache the
`LogicalPlan` without any metadata like `table name`. So here we list and
filter the table one by one.
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