[GitHub] [carbondata] marchpure opened a new pull request #3792: [CARBONDATA-3856] Support the LIMIT operator for show segments command

Wed, 17 Jun 2020 10:51:07 -0700 


marchpure opened a new pull request #3792:
URL: https://github.com/apache/carbondata/pull/3792


    ### Why is this PR needed?
    When the number segments is large, "SHOW SEGMENTS" time overhead is too 
high. The LIMIT operator shall be supported in the SHOW SEGMENTS command.
    
    ### What changes were proposed in this PR?
   Add LIMIT operator in the grammar parsing and read segments function.
       
    ### Does this PR introduce any user interface change?
   Yes
   
    ### Is any new testcase added?
   Yes
       
   


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