Stamatis Zampetakis created HIVE-23965:

             Summary: Improve plan regression tests using TPCDS30TB metastore 
dump and custom configs
                 Key: HIVE-23965
             Project: Hive
          Issue Type: Improvement
            Reporter: Stamatis Zampetakis

The existing regression tests (HIVE-12586) based on TPC-DS have certain 

The table statistics do not reflect cardinalities from a specific TPC-DS scale 
factor (SF). Some tables are from a 30TB dataset, others from 200GB dataset, 
and others from a 3GB dataset. This mix leads to plans that may never appear 
when using an actual TPC-DS dataset. 

The existing statistics do not contain information about partitions something 
that can have a big impact on the resulting plans.

The existing regression tests rely on more or less on the default configuration 
(hive-site.xml). In real-life scenarios though some of the configurations 
differ and may impact the choices of the optimizer.

This issue aims to address the above shortcomings by using a curated TPCDS30TB 
metastore dump along with some custom hive configurations. 

This message was sent by Atlassian Jira

Reply via email to