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| author | Maddie Zechar <mez2113@columbia.edu> | 2022-10-10 16:22:03 +0000 |
|---|---|---|
| committer | Evergreen Agent <no-reply@evergreen.mongodb.com> | 2022-10-10 17:16:27 +0000 |
| commit | dbd868972c766d7a272e7cb3fcd2f3c792b2dd83 (patch) | |
| tree | 03784fb830fc1005ff41b5f846f0715794309ccc /src/mongo/db/query/plan_explainer_impl.cpp | |
| parent | df498b17710f364a853c4dc1731cbdc6ec91e0f5 (diff) | |
| download | mongo-dbd868972c766d7a272e7cb3fcd2f3c792b2dd83.tar.gz | |
SERVER-64978 Add metrics to track if a plan was recovered from the plan cache
Diffstat (limited to 'src/mongo/db/query/plan_explainer_impl.cpp')
| -rw-r--r-- | src/mongo/db/query/plan_explainer_impl.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mongo/db/query/plan_explainer_impl.cpp b/src/mongo/db/query/plan_explainer_impl.cpp index 0b70636945a..dc118081b33 100644 --- a/src/mongo/db/query/plan_explainer_impl.cpp +++ b/src/mongo/db/query/plan_explainer_impl.cpp @@ -722,6 +722,10 @@ void PlanExplainerImpl::getSummaryStats(PlanSummaryStats* statsOut) const { const CachedPlanStats* cachedStats = static_cast<const CachedPlanStats*>(cachedPlan->getSpecificStats()); statsOut->replanReason = cachedStats->replanReason; + // Nonnull replanReason indicates cached plan was less effecient than expected and an + // alternative plan was chosen. + statsOut->replanReason ? statsOut->fromPlanCache = false + : statsOut->fromPlanCache = true; } else if (STAGE_MULTI_PLAN == stages[i]->stageType()) { statsOut->fromMultiPlanner = true; } else if (STAGE_COLLSCAN == stages[i]->stageType()) { |