Github user akashrn5 commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/2113#discussion_r181439768
  
    --- Diff: 
integration/spark2/src/main/scala/org/apache/spark/sql/CarbonEnv.scala ---
    @@ -173,6 +174,10 @@ object CarbonEnv {
           .addListener(classOf[AlterTableDropPartitionPostStatusEvent],
             AlterTableDropPartitionPostStatusListener)
           .addListener(classOf[AlterTableDropPartitionMetaEvent], 
AlterTableDropPartitionMetaListener)
    +      .addListener(classOf[AlterTableRenamePreEvent], 
LuceneRenameTablePreListener)
    --- End diff --
    
    this listener class is added to block alter operation on lucene datamap, if 
we are blocking alter operation for all the datamaps, then this may not be 
required.


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