Sessions are not supported by the MongoDB cluster to which this client is connected-springboot-mongodb-transactions

Question

I got a requirement to work with spring mongotemplate transactions. unless criteria meets,will have to roll back the transaction manually. I am getting exception like com.mongodb.MongoClientException: Sessions are not supported by the MongoDB cluster to which this client is connected. How to work with Spring mongodb transactions. Please help me out.

@Autowired
MongoTransactionManager mongoTransactionManager;

@Autowired
TestDao testDao;

@Transactional
public void testMethod() {
    int temp = 0;
    try {
        testDao.saveDatainTempTable();
        testDao.saveMongoData();
        if (temp == 0) {
            System.out.println("=========================");
            TransactionInterceptor.currentTransactionStatus().setRollbackOnly();
            mongoTransactionManager.rollback(TransactionInterceptor.currentTransactionStatus());
        }
    } catch (Exception e) {

    }

}

@Configuration
public class MongoTransactionConfig extends AbstractMongoConfiguration {

    @Bean
    MongoTransactionManager transactionManager(MongoDbFactory dbFactory) {
        return new MongoTransactionManager(dbFactory);
    }

    @Override
    protected String getDatabaseName() {
        return "test";
    }

    @Override
    public MongoClient mongoClient() {
        return new MongoClient("127.0.0.1", 27017);
    }
}

Consider updating the server side Mongo client to a version that does support sessions. — Sol W, Jun 24 '19 at 13:00
I am using the updated version only mongo v4.0.9 which supports sessions.But Still I am getting exception.I don't understand where I am going wrong — Ranjith N, Jun 25 '19 at 12:49
I was told that in my case it doesn't work with single instances — , Jun 27 '19 at 16:36
Maybe related to https://stackoverflow.com/questions/50255195/how-to-configure-a-mongodb-cluster-which-supports-sessions — burubum, Jul 10 '19 at 15:45

score 1 · Answer 1 · answered Jul 04 '20 at 12:40

On Linux, a default /etc/mongod.conf configuration file is included when using a package manager to install MongoDB.
On Windows, a default <install directory>/bin/mongod.cfg configuration file is included during the installation
On macOS, a default /usr/local/etc/mongod.conf configuration file is included when installing from MongoDB’s official Homebrew tap.

Add the following config

replication:
   oplogSizeMB: 128
   replSetName: "rs0"
   enableMajorityReadConcern: true

sudo service mongod restart;

mongo;

rs.initiate({
      _id: "rs0",
      version: 1,
      members: [
         { _id: 0, host : "localhost:27017" }
      ]
   }
)

check for the config to be enabled

rs.conf()

we can use the connection URL as

mongodb://localhost/default?ssl=false&replicaSet=rs0&readPreference=primary

docs: config-options single-instance-replication

Sessions are not supported by the MongoDB cluster to which this client is connected-springboot-mongodb-transactions

1 Answers1

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