In every new version of MongoDB, there have been a lot of changes and newly introduced features. One such change is the introduction of setDefaultRWConcern command from MongoDB 4.4. This feature has caused multi-document transaction writes to fail for one of my customers. In this blog post, we will look into the problem and how [&]

https://www.percona.com/blog/2021/06/30/mongodb-multi-document-transaction-fails-when-getlasterrordefaults-is-changed/