[GitHub] [carbondata] QiangCai opened a new pull request #3356: [WIP] Store data file size into index file

[GitBox <gi...@apache.org>]

QiangCai opened a new pull request #3356: [WIP] Store data file size into index file
URL: https://github.com/apache/carbondata/pull/3356
 
 
   Store data file size into the index file
   [Background]
   In BlockIndex, the file_size is always zero. We can set the actual value during data loading and use it during the query to improve the scenario of disaggregated compute and storage.
   [Benefi]
   For cloud and local table, it will help to improve the driver performance of the first query. 
   1. avoid invoking listFiles for each segment 
   2. avoid invoking getFileStatus for each data file 
   
   Be sure to do all of the following checklist to help us incorporate 
   your contribution quickly and easily:
   
    - [ ] Any interfaces changed?
    
    - [ ] Any backward compatibility impacted?
    
    - [ ] Document update required?
   
    - [ ] Testing done
           Please provide details on 
           - Whether new unit test cases have been added or why no new tests are required?
           - How it is tested? Please attach test report.
           - Is it a performance related change? Please attach the performance test report.
           - Any additional information to help reviewers in testing this change.
          
    - [ ] For large changes, please consider breaking it into sub-tasks under an umbrella JIRA. 
   
   

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