[GitHub] carbondata pull request #2174: [CARBONDATA-2350][DataMap] Fix bugs in minmax...

[jackylk]

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

    https://github.com/apache/carbondata/pull/2174#discussion_r181666508
  
    --- Diff: 
core/src/main/java/org/apache/carbondata/core/datastore/page/ColumnPage.java ---
    @@ -445,6 +477,31 @@ private void putNull(int rowId) {
         }
       }
     
    +  /**
    +   * Get null at rowId
    +   */
    +  private Object getNull(int rowId) {
    --- End diff --
    
    It is not clear what this function return, can you add more description in 
comment


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