过滤器的键和值限制是无序的,且不可配置 – 字段和值会默默消失

Fields discovery and value autocomplete both truncate to a fixed number of results without `ORDER BY`. On a high-cardinality source, the survivors are an arbitrary subset, the UI gives no indication that anything was dropped, and the one team setting that seems to control this does not reach either path. We encountered this on a source with ~6,150 distinct `LogAttributes` keys. Roughly 5,150 of them are invisible in the filter sidebar, and there is no way to raise the ceiling.