[Backport 12.0]: Add planner-version flag to vtexplain#9003
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askdba merged 1 commit intovitessio:release-12.0from Oct 18, 2021
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[Backport 12.0]: Add planner-version flag to vtexplain#9003askdba merged 1 commit intovitessio:release-12.0from
askdba merged 1 commit intovitessio:release-12.0from
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mattlord
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Type: Enhancement
Add planner-version flag to vtexplain Signed-off-by: Matt Lord <mattalord@gmail.com>
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frouioui
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Oct 18, 2021
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Description
With Vitess 12.0 we hope to begin migrating more users and workloads from the
V3planner to the newGen4planner as it should offer better performance, improved correctness, and additional query language support.But in order to aid in that effort, users will need a way to try and compare the planner results between the two for their common queries in order to gauge the impact of this migration.
Toward that end, this adds a new
-planner-versionflag tovtexplainthat allows you to get the explain output using theGen4planner instead of using the default ofV3.Related Issue(s)
Backport of: #8979
Docs: vitessio/website#843
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