MongoDB Connector for Hadoop Installation - Conflicting documentation.

[Pradeeban Kathiravelu]

Hi All,
I am trying to install the MongoDB connector for Hadoop.

[1] mentions, I need to have MongoDB java driver [2] installed in Hadoop's class path, as well as mongo-hadoop-core.jar.
The MongoDB java driver points to mongodb-driver.jar (3.2.2).

However, the FAQ [3] very clearly indicates:
* mongo-hadoop-core.jar and mongo-java-driver.jar are on Hadoop's CLASSPATH and Hive/Pig/Spark's CLASSPATH.
*

You do not have other Java driver artifacts on any of your CLASSPATHs. For example:

• mongodb-driver.jar

So this is conflicting.


Now my question is, which jar should I have in the Hadoop class path in addition to the mongo-hadoop-core.jar?


Is it mongo-java-driver.jar (known as "uber" jar, version 2.14.2), or is it mongodb-driver.jar (3.2.2)?

[1] https://docs.mongodb.org/ecosystem/tools/hadoop/
[2] http://mongodb.github.io/mongo-java-driver/?_ga=1.148413170.413454862.1459439927
[3] https://github.com/mongodb/mongo-hadoop/wiki/FAQ


Thank you.
Regards,
Pradeeban.

[Luke Lovett]

You should use the latest uber-jar "mongo-java-driver.jar" in addition to the relevant Hadoop jars.