Stamatis Zampetakis created HIVE-23965: ------------------------------------------
Summary: Improve plan regression tests using TPCDS30TB metastore dump and custom configs Key: HIVE-23965 URL: https://issues.apache.org/jira/browse/HIVE-23965 Project: Hive Issue Type: Improvement Reporter: Stamatis Zampetakis The existing regression tests (HIVE-12586) based on TPC-DS have certain shortcomings: 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 (v8.3.4#803005)