[jira] [Commented] (NIFI-8208) Upgrade MongoDB Driver to 4.2 series

["Joey Frazee (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-8208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17280310#comment-17280310 ] 

Joey Frazee commented on NIFI-8208:
-----------------------------------

I took a little look at this and if we use mongodb-driver-legacy, most of the changes seem to be of two sorts:

* Two of the WriteConcern modes have been removed after being deprecated for a while. These are FSYNCED and REPLICA_ACKNOWLEDGED. The recommended replacements are JOURNALED and W2. This change would be just an update to the property descriptor description and probably a warning.
* Use of the Bson library APIs. This requires some more changes, but still straightforward.

These changes make it all incompatible with the 3.x driver versions so this begs the question about whether we should just jump to mongo-driver-sync or mongo-driver-reactivestreams. 4.1 and 4.2 are advertised to be compatible with all recent Mongo versions, so this should be ok.

> Upgrade MongoDB Driver to 4.2 series
> ------------------------------------
>
>                 Key: NIFI-8208
>                 URL: https://issues.apache.org/jira/browse/NIFI-8208
>             Project: Apache NiFi
>          Issue Type: Improvement
>    Affects Versions: 1.12.1
>         Environment: Linux / Kerberos
>            Reporter: Nick Lange
>            Priority: Minor
>              Labels: MongoDB
>
> MongoDBs 3.12.X series driver tries to create a Kerberos Subject from a String which fails. The driver was reworked for version 4.2 and may just do the right thing. Without this fix, clients are forced to turn off subject matching in Java which seems to defeat some of the compartmentalization the nifi is looking to achieve.



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