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https://issues.apache.org/jira/browse/AMQ-8220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17326259#comment-17326259
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ASF subversion and git services commented on AMQ-8220:
------------------------------------------------------

Commit d1c48abaca86a896e6064c1f2fcd468b20afab73 in activemq's branch 
refs/heads/main from Jonathan Gallimore
[ https://gitbox.apache.org/repos/asf?p=activemq.git;h=d1c48ab ]

AMQ-8220 add add-opens options for Java 16


> Compatibility issue of 5.16.1 with Java 16
> ------------------------------------------
>
>                 Key: AMQ-8220
>                 URL: https://issues.apache.org/jira/browse/AMQ-8220
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.16.1
>            Reporter: Jiri Formanek
>            Assignee: Jean-Baptiste Onofré
>            Priority: Major
>             Fix For: 5.16.2
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> After switch to new Java version 16 ActiveMQ stopped to work. Better said 
> broker network stopped to work. Connections to other servers is opened and 
> immediately stopped because of following error (that is repeating again and 
> again);
> {quote}2021-04-08 13:11:21,198 | INFO | Network connection between 
> vm://localhost#74736 and HTTP Reader 
> [https://xxxx:1043|https://rsas8.kstm.labornetz.net:1043/] (localhost) has 
> been established. | org.apache.activemq.network.DemandForwardingBridgeSupport 
> | triggerStartAsyncNetworkBridgeCreation: remoteBroker=HTTP Reader 
> [https://xxx:1043|https://rsas8.kstm.labornetz.net:1043/], localBroker= 
> vm://localhost#74736
>  2021-04-08 13:11:21,212 | WARN | Network connection between 
> vm://localhost#74736 and HTTP Reader 
> [https://xxx:1043|https://rsas8.kstm.labornetz.net:1043/] shutdown due to a 
> remote error: com.thoughtworks.xstream.converters.ConversionException: No 
> converter available
>  ---- Debugging information ----
>  message : No converter available
>  type : java.util.concurrent.atomic.AtomicLong
>  converter : 
> com.thoughtworks.xstream.converters.reflection.ReflectionConverter
>  message[1] : Unable to make field private static final long 
> java.util.concurrent.atomic.AtomicLong.serialVersionUID accessible: module 
> java.base does not "opens java.util.concurrent.atomic" to unnamed module 
> @29caf222
>  ------------------------------- | 
> org.apache.activemq.network.DemandForwardingBridgeSupport | 
> triggerStartAsyncNetworkBridgeCreation: remoteBroker=HTTP Reader 
> [https://xxx:1043|https://rsas8.kstm.labornetz.net:1043/], localBroker= 
> vm://localhost#74736
>  2021-04-08 13:11:21,213 | WARN | Network connection between 
> vm://localhost#74736 and HTTP Reader 
> [https://xxx:1043|https://rsas8.kstm.labornetz.net:1043/] shutdown due to a 
> remote error: java.io.IOException: Failed to perform GET on: 
> [https://xxx:1043|https://rsas8.kstm.labornetz.net:1043/] as response was: 
> HttpResponseProxy{HTTP/1.1 500 Internal Server Error [Date: Thu, 08 Apr 2021 
> 11:11:21 GMT, Server: Jetty(9.4.35.v20201120), Strict-Transport-Security: 
> max-age=31536000; includeSubDomains, Vary: Accept-Encoding,User-Agent, 
> X-XSS-Protection: 1; mode=block, X-Frame-Options: DENY, Connection: close, 
> Content-Type: text/html] 
> org.apache.http.client.entity.DecompressingEntity@735e13b5} | 
> org.apache.activemq.network.DemandForwardingBridgeSupport | ActiveMQ 
> Transport: HTTP Reader 
> [https://xxx:1043|https://rsas8.kstm.labornetz.net:1043/]
>  2021-04-08 13:11:21,214 | INFO | Connector vm://localhost stopped | 
> org.apache.activemq.broker.TransportConnector | ActiveMQ 
> BrokerService[localhost] Task-1044
>  2021-04-08 13:11:21,214 | INFO | localhost bridge to localhost stopped | 
> org.apache.activemq.network.DemandForwardingBridgeSupport | ActiveMQ 
> BrokerService[localhost] Task-1044
> {quote}
> It seems that is incompatibility with Java 16 especially this message:
> {{Unable to make field private static final long 
> java.util.concurrent.atomic.AtomicLong.serialVersionUID accessible: module 
> java.base does not "opens java.util.concurrent.atomic" to unnamed module 
> @29caf222}}
>  
>  
>  



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