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https://issues.apache.org/jira/browse/HIVE-23965?focusedWorklogId=520179&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-520179
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ASF GitHub Bot logged work on HIVE-23965:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Dec/20 12:47
Start Date: 04/Dec/20 12:47
Worklog Time Spent: 10m
Work Description: kgyrtkirk merged pull request #1714:
URL: https://github.com/apache/hive/pull/1714
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Issue Time Tracking
-------------------
Worklog Id: (was: 520179)
Time Spent: 7h 40m (was: 7.5h)
> 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
> Assignee: Stamatis Zampetakis
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Attachments: master355.tgz
>
> Time Spent: 7h 40m
> Remaining Estimate: 0h
>
> 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.
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