[GitHub] [spark] cloud-fan commented on a change in pull request #23918: [SPARK-27011] reset command fails with cache

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cloud-fan commented on a change in pull request #23918: [SPARK-27011] reset command fails with cache
URL: https://github.com/apache/spark/pull/23918#discussion_r263738438
 
 

 ##########
 File path: sql/core/src/main/scala/org/apache/spark/sql/execution/command/commands.scala
 ##########
 @@ -198,3 +198,6 @@ case class StreamingExplainCommand(
     ("Error occurred during query planning: \n" + cause.getMessage).split("\n").map(Row(_))
   }
 }
+
+/** Mark that the command can be skipped from cache lookup */
+trait IgnoreCachedData {}
 
 Review comment:
   can we move it to catalyst module and make it more general? I'm not sure if only commands need it
   ```
   /**
    * A [[LogicalPlan]] operator that does not use the cached results stored in CacheManager.
    */
   trait IgnoreCachedData extends LogicalPlan
   
   ```

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