TopGunViper opened a new pull request #577: HIVE-21485: Add flag to turn off 
fetching partition stats in DESCRIBE…
URL: https://github.com/apache/hive/pull/577
 
 
   ## What changes were proposed in this pull request?
   Hive DESCRIBE [formatted|extended] operation cost more than 100 seconds 
after upgrading from Hive 1.2.1 to 2.3.4. This is mainly caused by showing 
stats for partitioned tables which was introduced by 
[HIVE-16098](https://issues.apache.org/jira/browse/HIVE-16098) when the 
partitioned tables have a large amount of partitions.
   
   So,could we add a flag that determines whether 'DESCRIBE 
[EXTENDED|FORMATTED]' operation display partitioned table stats or not?
   
   ## How was this patch tested?
   Query Unit Test

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