diff options
Diffstat (limited to 'src/mongo/db/pipeline/document_source.h')
| -rw-r--r-- | src/mongo/db/pipeline/document_source.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/mongo/db/pipeline/document_source.h b/src/mongo/db/pipeline/document_source.h index 5e8244e7984..49689de85dd 100644 --- a/src/mongo/db/pipeline/document_source.h +++ b/src/mongo/db/pipeline/document_source.h @@ -461,10 +461,11 @@ public: /** * Returns true if it would be correct to execute this stage in parallel across the shards in - * cases where the final stage is an $out. For example, a $group stage which is just merging the - * groups from the shards can be run in parallel since it will preserve the shard key. + * cases where the final stage is a stage which can perform a write operation, such as $merge. + * For example, a $group stage which is just merging the groups from the shards can be run in + * parallel since it will preserve the shard key. */ - virtual bool canRunInParallelBeforeOut( + virtual bool canRunInParallelBeforeWriteStage( const std::set<std::string>& nameOfShardKeyFieldsUponEntryToStage) const { return false; } |