Thanks, sam, but I used current openflowplugin master to build, it should pull 
the latest openflowjava. Just want to double check if this warn is harmless.

From: Sam Hague [mailto:[email protected]]
Sent: Wednesday, May 25, 2016 7:42 PM
To: Yang, Yi Y <[email protected]>
Cc: [email protected]; 
[email protected]; [email protected]
Subject: Re: [netvirt-dev] openflowplugin bug: MatchEntry msgType: 1 oxm_field: 
31 experimenterID: null

Yi,
one more option which is better and already merged. This logs the warning only 
once.
Sam

[1] https://git.opendaylight.org/gerrit/#/c/39311/

On Wed, May 25, 2016 at 7:37 AM, Sam Hague 
<[email protected]<mailto:[email protected]>> wrote:
Yi,
yes, there was a commit in openflowjava that is dumping the exceptions. It only 
deals with tableFeatures which we don't care about and has been there for a 
while but the recent patch started catching it and dumping the whole 
exception.. Some workarounds:
- revert the patch, [1] is the revert
- set the module to ERROR for that log and mask the exception
- properly fix those classes and add the serializer. [1] lists the classes in 
error.
Sam

[1] https://git.opendaylight.org/gerrit/#/c/39257/

On Tue, May 24, 2016 at 10:59 PM, Yang, Yi Y 
<[email protected]<mailto:[email protected]>> wrote:
Hi, folks

I saw the below error info in netvirt

2016-05-25 12:39:55,102 | WARN  | ntLoopGroup-11-1 | ListDeserializer           
      | 164 - org.opendaylight.openflowjava.openflow-protocol-impl - 
0.8.0.SNAPSHOT | Problem during reading table feature property. Skipping 
unknown feature property: msgVersion: 4 objectClass: 
org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry
 msgType: 1 oxm_field: 31 experimenterID: null.If more information is needed, 
set org.opendaylight.openflowjava do DEBUG log level.
2016-05-25 12:39:55,102 | WARN  | ntLoopGroup-11-2 | ListDeserializer           
      | 164 - org.opendaylight.openflowjava.openflow-protocol-impl - 
0.8.0.SNAPSHOT | Problem during reading table feature property. Skipping 
unknown feature property: msgVersion: 4 objectClass: 
org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry
 msgType: 1 oxm_field: 35 experimenterID: null.If more information is needed, 
set org.opendaylight.openflowjava do DEBUG log level.

I believe this is a new openflowplugin bug, it is very similar to 
https://git.opendaylight.org/gerrit/#/c/18669/, maybe recent commit broke this.

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