[ES|QL] Do not push sort on many keyword fields to lucene#142700
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fang-xing-esql merged 10 commits intoelastic:mainfrom Feb 24, 2026
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[ES|QL] Do not push sort on many keyword fields to lucene#142700fang-xing-esql merged 10 commits intoelastic:mainfrom
fang-xing-esql merged 10 commits intoelastic:mainfrom
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Resolves: #140134
Fixes: #141083
If the number of keyword sort keys exceeds
esql.max_keyword_sort_fields(default: 10, defined in PlannerSettings), the sort is not pushed down to lucene and is deferred to the compute engine. Pushing down a sort with a large number of keyword fields can cause significant among of untracked memory during sorting and lead to OOM.