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add variable to control the concurrency of buildSampling #47583

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hawkingrei opened this issue Oct 12, 2023 · 0 comments · Fixed by #47582
Closed

add variable to control the concurrency of buildSampling #47583

hawkingrei opened this issue Oct 12, 2023 · 0 comments · Fixed by #47582
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Enhancement

Now we use tidb_build_stats_concurrency to control it. we use tidb_build_stats_concurrency to control the number of analyze jobs, too. It will create too many goroutines in the tidb. it will affect the performance and lead to OOM.
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variable: add variable to control the concurrency of buildSampling hawkingrei/tidb
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