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From simafengyun <...@git.apache.org>
Subject [GitHub] incubator-carbondata issue #627: CARBONDATA-748
Date Tue, 07 Mar 2017 11:20:44 GMT
Github user simafengyun commented on the issue:

    https://github.com/apache/incubator-carbondata/pull/627
  
    so binary search only fit the below cases,please comfirm thanks
    
    1 the first dimension column , since it's logicl order are the same with physical order
in blocklet level,so it does not need inverted index
    
    2 for dimension column which has inverted index
    
    question 1
    
    if a dimension column is not the first colmn and in a blocklet it just has the same order
for both logical and physical,will carbondata create inverted index for it?
    
    question 2
    
    is there an easy way to identify whether a dimension column has no_inverted_index property
config by user in source code ,so it will be helpful for me to add a condition to use binary
search
    
    
    
    thanks
    
    在 2017-03-07 18:35:05,"Ravindra Pesala" <notifications@github.com> 写道:
    
    
    @simafengyun you are right, default we sort the data but we can avoid sorting using no_inverted_index
property at tblproperties level. So if user uses this configuration then we cannot do binary
search always.
    
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