1 files changed, 0 insertions, 37 deletions
diff --git a/src/mongo/s/commands/cluster_map_reduce_cmd.cpp b/src/mongo/s/commands/cluster_map_reduce_cmd.cpp
index 0c40f522e1b..c0abf8efd87 100644
--- a/src/mongo/s/commands/cluster_map_reduce_cmd.cpp
+++ b/src/mongo/s/commands/cluster_map_reduce_cmd.cpp
@@ -41,43 +41,6 @@
 namespace mongo {
 namespace {
 
-/**
- * Outline for sharded map reduce for sharded output, $out replace:
- *
- * ============= mongos =============
- * 1. Send map reduce command to all relevant shards with some extra info like the value for
- *    the chunkSize and the name of the temporary output collection.
- *
- * ============= shard =============
- * 2. Does normal map reduce.
- *
- * 3. Calls splitVector on itself against the output collection and puts the results into the
- *    response object.
- *
- * ============= mongos =============
- * 4. If the output collection is *not* sharded, uses the information from splitVector to
- *    create a pre-split sharded collection.
- *
- * 5. Grabs the distributed lock for the final output collection.
- *
- * 6. Sends mapReduce.shardedfinish.
- *
- * ============= shard =============
- * 7. Extracts the list of shards from the mapReduce.shardedfinish and performs a broadcast
- *    query against all of them to obtain all documents that this shard owns.
- *
- * 8. Performs the reduce operation against every document from step #7 and outputs them to
- *    another temporary collection. Also keeps track of the BSONObject size of every "reduced"
- *    document for each chunk range.
- *
- * 9. Atomically drops the old output collection and renames the temporary collection to the
- *    output collection.
- *
- * ============= mongos =============
- * 10. Releases the distributed lock acquired at step #5.
- *
- * 11. Inspects the BSONObject size from step #8 and determines if it needs to split.
- */
 class ClusterMapReduceCommand : public MapReduceCommandBase {
 public:
     ClusterMapReduceCommand() = default;