MongoDB, java.lang.NoSuchFieldError

Question

Program is failing on line 1

    MongoClient mongoClient = new MongoClient("localhost", 27017);

With

java.lang.NoSuchFieldError: ACKNOWLEDGED
    at com.mongodb.MongoClientOptions$Builder.<init>(MongoClientOptions.java:54)
    at com.mongodb.MongoClient.<init>(MongoClient.java:126)
    at com.mongodb.MongoClient.<init>(MongoClient.java:115)

While mongo is,

Tue Nov 27 15:40:13 [initandlisten] waiting for connections on port 27017

What am i doing wrong please?

could you provide versions of server, driver you are using?

Asya Kamsky
– Asya Kamsky

2012-11-28 02:17:18 +00:00
Commented Nov 28, 2012 at 2:17 — Asya Kamsky
– Asya Kamsky, Commented Nov 28, 2012 at 2:17

jyemin · Accepted Answer · 2012-11-29 14:19:32Z

6

I suspect that you have multiple versions of the mongo-java-driver jar in your classpath. Try running with -verbose:class to see where the WriteConcern class is being loaded from.

edited Nov 29, 2012 at 14:19

answered Nov 29, 2012 at 14:03

jyemin

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3 Comments

Gaurav Sharma Over a year ago

removing the multiple versions solved my problem.. thanks :)

akki Over a year ago

Where does this need to run? I am facing the same issue, would really appreciate if someone could help me out. I am new to Scala.

akki Over a year ago

I was running

spark-shell --packages org.mongodb.spark:mongo-spark-connector_2.11:2.3.0 --jars mongo-hadoop-spark-2.0.2.jar,mongo-java-driver-3.2.2.jar

earlier but running spark-shell --packages org.mongodb.spark:mongo-spark-connector_2.11:2.3.0 instead worked for me.

Prem Kumar K · Accepted Answer · 2012-11-29 13:35:20Z

4

use this line.

Mongo mongo= new Mongo("localhost", 27017);

answered Nov 29, 2012 at 13:35

Prem Kumar K

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Comments

Enayat · Accepted Answer · 2016-01-15 23:29:21Z

4

I had the same problem and I realized that I have two java libraries for reading Mongo DB. When I removed one of them (com.mongodb-x-x.jar), the error disappeared.

answered Jan 15, 2016 at 23:29

Enayat

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