Add LIMIT clause to fulltext scans to prevent OOM issues #202
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emmanuel-keller
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tobiemh
approved these changes
Nov 19, 2025
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Problem
The fulltext scan tests (
where_field_fulltext_*) were configured withoutLIMITclauses, causing out-of-memory crashes when running benchmarks with large datasets and high concurrency.Fulltext searches can match a large percentage of records in the dataset. With millions of records, each fulltext scan could attempt to load hundreds of thousands or millions of matching records into memory simultaneously. Combined with high concurrency settings (e.g., 48 clients × 24 threads = 1,152 concurrent operations), this resulted in memory exhaustion and the benchmark process being killed by the OS.
Solution
Added
limit: 1000to allwhere_field_fulltext_*scan configurations. This ensures:Impact
Users can now successfully run benchmarks with large sample sizes (e.g., 5M records) and high concurrency without encountering OOM kills during fulltext scan operations.