diff options
Diffstat (limited to 'src/mongo/db/query/sbe_runtime_planner.h')
| -rw-r--r-- | src/mongo/db/query/sbe_runtime_planner.h | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/src/mongo/db/query/sbe_runtime_planner.h b/src/mongo/db/query/sbe_runtime_planner.h index 3776e571e6f..f4f0955abd4 100644 --- a/src/mongo/db/query/sbe_runtime_planner.h +++ b/src/mongo/db/query/sbe_runtime_planner.h @@ -98,6 +98,21 @@ protected: prepareExecutionPlan(PlanStage* root, stage_builder::PlanStageData* data) const; /** + * Executes a candidate plan until it + * - reaches EOF, + * - reaches the 'maxNumResults' limit, + * - early exits via the TrialRunTracker, or + * - returns a failure Status. + * + * The execution process populates the 'results' array of the 'candidate' plan with any results + * from execution the plan. This function also sets the 'status' and 'exitedEarly' fields of the + * input 'candidate' object when applicable. + * + * Returns true iff the candidate plan reaches EOF. + */ + bool executeCandidateTrial(plan_ranker::CandidatePlan* candidate, size_t maxNumResults); + + /** * Executes each plan in a round-robin fashion to collect execution stats. Stops when: * * Any plan hits EOF. * * Or returns a pre-defined number of results. @@ -108,10 +123,8 @@ protected: * Upon completion returns a vector of candidate plans. Execution stats can be obtained for each * of the candidate plans by calling 'CandidatePlan->root->getStats()'. * - * After the trial period ends, all plans remain open. - * - * The number of reads allowed for a trial execution period is bounded by - * 'maxTrialPeriodNumReads'. + * After the trial period ends, all plans remain open, but 'exitedEarly' plans are in an invalid + * state. Any 'exitedEarly' plans must be closed and reopened before they can be executed. */ std::vector<plan_ranker::CandidatePlan> collectExecutionStats( std::vector<std::unique_ptr<QuerySolution>> solutions, |