几分钟后，保存在mongodb中的记录消失了

Question

Updated records got missing after awhile in mongodb

I tried to update a document in mongodb using java driver 3.6, st first the records got updated successfully. but after 1 minutes those records value turned to an empty string

A = new A();
            BasicDBObject searchQuery = new BasicDBObject("username", username);
            BasicDBObject updateFields = new BasicDBObject();
            updateFields.append("fullnames", agent.getFullnames());
 BasicDBObject setQuery = new BasicDBObject();
            setQuery.append("$set", updateFields);
            getLiveagentCollection().update(searchQuery, setQuery);

The updated records shoould remain persisted on the DB

Answer 1

I was able to resolve this issue, by adding writeconcern within the mongodb.

MongoClient client = new MongoClient("localhost", 27112);
client.setWriteConcern(WriteConcern.MAJORITY);