From b5578f6ae1e66a7c8979115e43dc45eb7c2bd057 Mon Sep 17 00:00:00 2001
From: Lamont Nelson <lamont.nelson@mongodb.com>
Date: Wed, 26 Feb 2020 19:42:48 -0500
Subject: debug me

---
 src/mongo/s/client/shard_registry.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/mongo/s/client/shard_registry.cpp b/src/mongo/s/client/shard_registry.cpp
index 7bf3c59abe4..4d857a50dbe 100644
--- a/src/mongo/s/client/shard_registry.cpp
+++ b/src/mongo/s/client/shard_registry.cpp
@@ -501,6 +501,19 @@ shared_ptr<Shard> ShardRegistryData::findByShardId(const ShardId& shardId) const
 }
 
 shared_ptr<Shard> ShardRegistryData::_findByShardId(WithLock, ShardId const& shardId) const {
+    std::stringstream ss;
+    std::shared_ptr<Shard> shard;
+    for (auto i = _lookup.begin(); i != _lookup.end(); i++) {
+        shard = i->second;
+        ss << "(" << i->first << "," << shard->getId() << ")"
+           << ", ";
+    }
+
+    LOGV2(123,
+          "_findByShardId: {shardId}; {ids}",
+          "shardId"_attr = shardId.toString(),
+          "ids"_attr = ss.str());
+
     auto i = _lookup.find(shardId);
     return (i != _lookup.end()) ? i->second : nullptr;
 }
-- 
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