I currently have an algorithm that needs to know whether query results are fresh up to a known point in time, and I'm using an explicit soft commit request to act as a latch point. I record the time T just before I issue a soft commit request, and when it returns, I assume that query results include all documents indexed prior to T. (Note that I record T *prior* to issuing the soft commit request, to avoid the obvious race.)
Is that sound? Is it reliably true that once a soft commit request returns, any subsequent queries will hit a new (and autowarmed) searcher? I'm specifically wondering whether Solr might continue to autowarm a new pending searcher in the background after claiming to finish the soft commit and then at some unknown point later switch to the newer searcher, such that queries can hit a stale searcher accidentally. Hope that question makes sense. Any help, pointers to code, whatever, would be greatly appreciated! - Bruce
