SERVER-71477 Check '_internalAllCollectionStatsSpec.getStats()' exists before calling 'makeStatsForNs'

4 files changed, 17 insertions, 7 deletions

diff --git a/etc/backports_required_for_multiversion_tests.yml b/etc/backports_required_for_multiversion_tests.yml
index e9f9dd4b5b4..662a66d0850 100644
--- a/etc/backports_required_for_multiversion_tests.yml
+++ b/etc/backports_required_for_multiversion_tests.yml
@@ -262,6 +262,8 @@ last-continuous:
     ticket: SERVER-70436
   - test_file: jstests/sharding/prepare_transaction_then_migrate.js
     ticket: SERVER-68361
+  - test_file: jstests/sharding/all_collection_stats.js
+    ticket: SERVER-71477
   suites: null
 last-lts:
   all:
@@ -599,4 +601,6 @@ last-lts:
     ticket: SERVER-70436
   - test_file: jstests/sharding/prepare_transaction_then_migrate.js
     ticket: SERVER-68361
+  - test_file: jstests/sharding/all_collection_stats.js
+    ticket: SERVER-71477
   suites: null
diff --git a/jstests/sharding/all_collection_stats.js b/jstests/sharding/all_collection_stats.js
index 00cdc639082..c08c42fe8b2 100644
--- a/jstests/sharding/all_collection_stats.js
+++ b/jstests/sharding/all_collection_stats.js
@@ -67,6 +67,10 @@ for (let i = 0; i < 20; i++) {
     assert(exists);
 }
 
+// Test valid query with empty specification
+assert.commandWorked(
+    adminDb.runCommand({aggregate: 1, pipeline: [{$_internalAllCollectionStats: {}}], cursor: {}}));
+
 // Test invalid queries/values.
 assert.commandFailedWithCode(
     adminDb.runCommand({aggregate: 1, pipeline: [{$_internalAllCollectionStats: 3}], cursor: {}}),
diff --git a/src/mongo/db/pipeline/document_source_internal_all_collection_stats.cpp b/src/mongo/db/pipeline/document_source_internal_all_collection_stats.cpp
index f37206dbafe..5763042df1f 100644
--- a/src/mongo/db/pipeline/document_source_internal_all_collection_stats.cpp
+++ b/src/mongo/db/pipeline/document_source_internal_all_collection_stats.cpp
@@ -61,12 +61,14 @@ DocumentSource::GetNextResult DocumentSourceInternalAllCollectionStats::doGetNex
             continue;
         }
 
-        try {
-            return {Document{DocumentSourceCollStats::makeStatsForNs(
-                pExpCtx, nss, _internalAllCollectionStatsSpec.getStats().get())}};
-        } catch (const ExceptionFor<ErrorCodes::CommandNotSupportedOnView>&) {
-            // We don't want to retrieve data for views, only for collections.
-            continue;
+        if (const auto& stats = _internalAllCollectionStatsSpec.getStats()) {
+            try {
+                return {
+                    Document{DocumentSourceCollStats::makeStatsForNs(pExpCtx, nss, stats.get())}};
+            } catch (const ExceptionFor<ErrorCodes::CommandNotSupportedOnView>&) {
+                // We don't want to retrieve data for views, only for collections.
+                continue;
+            }
         }
     }
 
diff --git a/src/mongo/db/pipeline/document_source_internal_all_collection_stats.h b/src/mongo/db/pipeline/document_source_internal_all_collection_stats.h
index 491b6354c3f..1779ee36dec 100644
--- a/src/mongo/db/pipeline/document_source_internal_all_collection_stats.h
+++ b/src/mongo/db/pipeline/document_source_internal_all_collection_stats.h
@@ -119,7 +119,7 @@ private:
 
     // The specification object given to $_internalAllCollectionStats containing user specified
     // options.
-    DocumentSourceInternalAllCollectionStatsSpec _internalAllCollectionStatsSpec;
+    const DocumentSourceInternalAllCollectionStatsSpec _internalAllCollectionStatsSpec;
     boost::optional<std::deque<BSONObj>> _catalogDocs;
 
     // A $match stage can be absorbed in order to avoid unnecessarily computing the stats for