dongjoon-hyun commented on a change in pull request #24081: [SPARK-27151][SQL]
ClearCacheCommand should be case-object to avoid copys
URL: https://github.com/apache/spark/pull/24081#discussion_r265350815
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/cache.scala
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@@ -83,13 +83,10 @@ case class UncacheTableCommand(
/**
* Clear all cached data from the in-memory cache.
*/
-case class ClearCacheCommand() extends RunnableCommand {
+case object ClearCacheCommand extends RunnableCommand with IgnoreCachedData {
Review comment:
Hi, @maropu .
The purpose and title doesn't match. What you want is `IgnoreCahedData` and
the test case, isn't it?
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