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Posted to issues@carbondata.apache.org by "kumar vishal (JIRA)" <ji...@apache.org> on 2019/03/21 18:22:00 UTC

[jira] [Created] (CARBONDATA-3321) Improve Single/Concurrent query performance

kumar vishal created CARBONDATA-3321:
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             Summary: Improve Single/Concurrent query performance 
                 Key: CARBONDATA-3321
                 URL: https://issues.apache.org/jira/browse/CARBONDATA-3321
             Project: CarbonData
          Issue Type: Improvement
            Reporter: kumar vishal


When number of Segments are high Single/Concurrent query is slow. because of below reason 
 # Memory footprint is more because of this gc is more and reducing query performance
 # Converting to Unsafe data map row to safe data map during pruning 
 # Multi threaded pruning in case of non filter query is not supported 
 # Retrieval from unsafe data map row is slower 



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