SERVER-54646 support hiding/unhiding indexes by name on time-series collections

2 files changed, 14 insertions, 1 deletions

diff --git a/jstests/core/timeseries/timeseries_index.js b/jstests/core/timeseries/timeseries_index.js
index 7d9778fb5f1..8548b1f8885 100644
--- a/jstests/core/timeseries/timeseries_index.js
+++ b/jstests/core/timeseries/timeseries_index.js
@@ -86,6 +86,17 @@ const runTest = function(keyForCreate, hint) {
     assert.commandWorked(coll.createIndex(keyForCreate, {name: 'myindex2'}),
                          'failed to create index: ' + tojson(keyForCreate));
     assert.commandWorked(coll.dropIndexes(['myindex2']), 'failed to drop indexes: [myindex2]');
+
+    // Check that we are able to hide and unhide the index by name.
+    assert.commandWorked(coll.createIndex(keyForCreate, {name: 'hide1'}),
+                         'failed to create index: ' + tojson(keyForCreate));
+    assert.eq(1, bucketsColl.find().hint(hint).toArray().length);
+    assert.commandWorked(coll.hideIndex('hide1'), 'failed to hide index: hide1');
+    assert.commandFailedWithCode(assert.throws(() => bucketsColl.find().hint(hint).toArray()),
+                                              ErrorCodes.BadValue);
+    assert.commandWorked(coll.unhideIndex('hide1'), 'failed to unhide index: hide1');
+    assert.eq(1, bucketsColl.find().hint(hint).toArray().length);
+    assert.commandWorked(coll.dropIndex('hide1'), 'failed to drop index: hide1');
 };
 
 runTest({[metaFieldName]: 1}, {meta: 1});
diff --git a/src/mongo/db/catalog/coll_mod.cpp b/src/mongo/db/catalog/coll_mod.cpp
index 7065b4ec96b..6ada21aa489 100644
--- a/src/mongo/db/catalog/coll_mod.cpp
+++ b/src/mongo/db/catalog/coll_mod.cpp
@@ -237,7 +237,9 @@ StatusWith<CollModRequest> parseCollModRequest(OperationContext* opCtx,
                 }
 
                 // Disallow index hiding/unhiding on system collections.
-                if (nss.isSystem()) {
+                // Bucket collections, which hold data for user-created time-series collections, do
+                // not have this restriction.
+                if (nss.isSystem() && !nss.isTimeseriesBucketsCollection()) {
                     return Status(ErrorCodes::BadValue, "Can't hide index on system collection");
                 }