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https://issues.apache.org/jira/browse/HIVE-23965?focusedWorklogId=519718&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-519718
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ASF GitHub Bot logged work on HIVE-23965:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 03/Dec/20 15:19
Start Date: 03/Dec/20 15:19
Worklog Time Spent: 10m
Work Description: kgyrtkirk commented on pull request #1714:
URL: https://github.com/apache/hive/pull/1714#issuecomment-738072615
> @kgyrtkirk The previous issue was not due to flakiness. The schema of the
metastore changed between the time that pre-commit tests were run and the time
that this PR was merged to master. To avoid a similar situation the PR should
be merged ASAP after running the pre-commit with the tip of the master.
okay; the last precommit run for this changeset was executed on 11.27 -
which was a few days ago ;lets wait for the 3 runs I've scheduled and merge it
right after those
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Issue Time Tracking
-------------------
Worklog Id: (was: 519718)
Time Spent: 7.5h (was: 7h 20m)
> 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: 7.5h
> 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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