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Posted to gitbox@hive.apache.org by GitBox <gi...@apache.org> on 2019/11/14 14:04:11 UTC

[GitHub] [hive] kings129 opened a new pull request #844: Spark read not fallback to fileSchema when indexColumnsWanted is empty

kings129 opened a new pull request #844: Spark read not fallback to fileSchema when indexColumnsWanted is empty
URL: https://github.com/apache/hive/pull/844
 
 
   Query "select count(*) from t" on parquet table read in all the data (all columns), which is not needed other than reading metadata.
   
   Don't know why this empty list check was added, please suggest if there're any other impact.
   
   JIRA: https://issues.apache.org/jira/browse/HIVE-22495#

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