[GitHub] carbondata pull request #2318: [CARBONDATA-2491] Fix the error when reader r...

[jackylk]

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

    https://github.com/apache/carbondata/pull/2318#discussion_r189421068
  
    --- Diff: 
core/src/main/java/org/apache/carbondata/core/datamap/DataMapStoreManager.java 
---
    @@ -267,6 +267,8 @@ public TableDataMap getDataMap(CarbonTable table, 
DataMapSchema dataMapSchema) {
               }
             }
           }
    +    } else {
    +      dataMap.clear();
    --- End diff --
    
    why is it required? please add comment


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