jackylk opened a new pull request, #4367:
URL: https://github.com/apache/carbondata/pull/4367

    ### Why is this PR needed?
    
   There is a security issue reported by the Apache Security Team. Calling 
Snappy.uncompress without length validation is subject to attack.
    
    ### What changes were proposed in this PR?
   
   Add length validation before calling Snappy, modified all places in 
carbondata-core SnappyCompressor
   
       
    ### Does this PR introduce any user interface change?
    - No
   
    ### Is any new testcase added?
    - No
   
   
       
   


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