fix: ensure cursor readPreference is applied to find operations (#2751)

mongodb · Mar 25, 2021 · 91ba19e · 91ba19e
1 parent f2a4ff8
commit 91ba19e
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/operations/find.js b/lib/operations/find.js
@@ -20,6 +20,9 @@ class FindOperation extends OperationBase {
     // copied from `CommandOperationV2`, to be subclassed in the future
     this.server = server;
 
+    // updates readPreference if setReadPreference was called on the cursor
+    this.readPreference = ReadPreference.resolve(this, this.options);
+
     if (typeof this.cmd.allowDiskUse !== 'undefined' && maxWireVersion(server) < 4) {
       callback(new MongoError('The `allowDiskUse` option is not supported on MongoDB < 3.2'));
       return;