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perf: Double default loadahead for MSQ.#19414

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gianm merged 1 commit into
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gianm:msq-more-loadahead
May 6, 2026
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perf: Double default loadahead for MSQ.#19414
gianm merged 1 commit into
apache:masterfrom
gianm:msq-more-loadahead

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@gianm gianm commented May 5, 2026

Setting loadahead to double the number of processing threads provides a better likelihood of keeping the processing threads busy. It also matches the default number of VSF on-demand loading threads.

Setting loadahead to double the number of processing threads provides a
better likelihood of keeping the processing threads busy. It also
matches the default number of VSF on-demand loading threads.
@github-actions github-actions Bot added Area - Batch Ingestion Area - MSQ For multi stage queries - https://github.com/apache/druid/issues/12262 labels May 5, 2026
@gianm gianm merged commit 09e5e93 into apache:master May 6, 2026
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@gianm gianm added this to the 38.0.0 milestone May 6, 2026
@gianm gianm deleted the msq-more-loadahead branch May 6, 2026 03:21
317brian pushed a commit to 317brian/druid that referenced this pull request May 11, 2026
Setting loadahead to double the number of processing threads provides a
better likelihood of keeping the processing threads busy. It also
matches the default number of VSF on-demand loading threads.
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Area - Batch Ingestion Area - MSQ For multi stage queries - https://github.com/apache/druid/issues/12262

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