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| author | Anton Korshunov <anton.korshunov@mongodb.com> | 2020-02-20 14:06:18 +0000 |
|---|---|---|
| committer | Evergreen Agent <no-reply@evergreen.mongodb.com> | 2020-02-26 08:58:45 +0000 |
| commit | 6bbb8a83a1df51bf88d18961425501301915fc0a (patch) | |
| tree | eaa31e40cfd3a3fccd3ee3c2ccc53a8afc6ef386 /src/mongo/db/query/plan_executor_impl.h | |
| parent | 51eceb8afa6610b4ff0befb92ec6039173bab00f (diff) | |
| download | mongo-6bbb8a83a1df51bf88d18961425501301915fc0a.tar.gz | |
SERVER-46270 Optimize postBatchResumeToken and latestOpLogTimestamp retrieval in PlanExecutor
Diffstat (limited to 'src/mongo/db/query/plan_executor_impl.h')
| -rw-r--r-- | src/mongo/db/query/plan_executor_impl.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/mongo/db/query/plan_executor_impl.h b/src/mongo/db/query/plan_executor_impl.h index d82a1e33460..cffddab0b3e 100644 --- a/src/mongo/db/query/plan_executor_impl.h +++ b/src/mongo/db/query/plan_executor_impl.h @@ -196,6 +196,13 @@ private: enum { kUsable, kSaved, kDetached, kDisposed } _currentState = kUsable; bool _everDetachedFromOperationContext = false; + + // A pointer either to a ChangeStreamProxy or a CollectionScan stage, if present in the + // execution tree, or nullptr otherwise. We cache it to avoid the need to traverse the execution + // tree in runtime when the executor is requested to return the oplog tracking info. Since this + // info is provided by either of these stages, the executor will simply delegate the request to + // the cached stage. + const PlanStage* _oplogTrackingStage{nullptr}; }; } // namespace mongo |