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https://issues.apache.org/jira/browse/ARTEMIS-1804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16448001#comment-16448001
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Lionel Cons commented on ARTEMIS-1804:
--------------------------------------
The test suite is complex and uses concurrent producers and consumers, all
running STOMP. It's hard to describe what it does when the problem occurs.
FWIW, the same NPE occurs with the latest snapshot
({{apache-artemis-2.6.0-20180420.144640-54-bin.tar.gz}}).
> NPE in recent snapshot
> ----------------------
>
> Key: ARTEMIS-1804
> URL: https://issues.apache.org/jira/browse/ARTEMIS-1804
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Reporter: Lionel Cons
> Priority: Major
>
> Running some tests against {{artemis-2.6.0-20180410.175207-36}}, I noticed
> the broker logged several NPEs looking like:
> {code:java}
> 2018-04-12 14:19:15,097 WARN [io.netty.handler.ssl.SslHandler] [id:
> 0xc8c4c74d, L:/xxx:yyy ! R:/2001:1458:202:227:0:0:100:6%0:32802] flush()
> raised a masked exception.: java.lang.NullPointerException
> at io.netty.handler.ssl.SslHandler.wrapAndFlush(SslHandler.java:742)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:734)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:1595)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at io.netty.handler.ssl.SslHandler.access$600(SslHandler.java:165)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at io.netty.handler.ssl.SslHandler$1.run(SslHandler.java:631)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:309)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)
> [netty-all-4.1.22.Final.jar:4.1.22.Final]
> at
> org.apache.activemq.artemis.utils.ActiveMQThreadFactory$1.run(ActiveMQThreadFactory.java:118)
> [artemis-commons-2.6.0-SNAPSHOT.jar:2.6.0-SNAPSHOT]
> {code}
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