[GitHub] carbondata pull request #1476: [CARBONDATA-1528][CARBONDATA-1527] [PreAgg] R...

[ravipesala]

Github user ravipesala commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/1476#discussion_r149909681
  
    --- Diff: 
integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/AlterTableDropColumnCommand.scala
 ---
    @@ -55,6 +55,14 @@ private[sql] case class AlterTableDropColumnCommand(
           carbonTable = metastore
             .lookupRelation(Some(dbName), 
tableName)(sparkSession).asInstanceOf[CarbonRelation]
             .tableMeta.carbonTable
    +      if (carbonTable.isPreAggregateTable) {
    --- End diff --
    
    Add all these verifications on pre-event listener


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