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From "Artyom Safronov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-8097) NullPointerException in AMQP 1.0 plugin using OpenJDK
Date Wed, 07 Feb 2018 10:53:00 GMT

    [ https://issues.apache.org/jira/browse/QPID-8097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16355309#comment-16355309
] 

Artyom Safronov commented on QPID-8097:
---------------------------------------

Please clarify what "using AMQP 1.0 against Broker-J" phrase means.

I know that 7th version of Qpid have been released with major improvements and fixes. But
I continued to use 6th one because of changes in API (first of all Broker class). And that
issue is the only severe problem I have faced with.

On my PC I have Oracle JDK installed and also there is a dedicated server for CI that has
OpenJDK installed. The defect have been found on that server (locally all is fine). So at
first OpenJDK was upgraded and after that (because of it did not helped) was replaced with
Oracle JDK.

At the moment we use Qpid only in the development environment.

I have heard about minor differences between OpenJDK and Oracle JDK but in the real life they
have more. :)

Qpid is embedded through creating instance of Broker class with all specific options.

> NullPointerException in AMQP 1.0 plugin using OpenJDK
> -----------------------------------------------------
>
>                 Key: QPID-8097
>                 URL: https://issues.apache.org/jira/browse/QPID-8097
>             Project: Qpid
>          Issue Type: Bug
>          Components: Broker-J
>    Affects Versions: qpid-java-6.1.5
>            Reporter: Artyom Safronov
>            Priority: Major
>         Attachments: Qpid stacktrace.txt
>
>
> An unexpected NullPointerException occures in AMQP 1.0 plugin at the first attempt to
connect to the broker using *OpenJDK*.
> The problem was found while running Qpid in unit tests that verify code communicated
with the broker through AQMP. There is a test case that starts Qpid before each test and stops
it after it. That test case verifies a module that establishes a connection with the broker.
The broker refuses the connection because of NullPointerException (see the attached stacktrace). Using *Oracle
JDK* all tests run fine.
> +The first strange+ thing looks like this. Only a test that does the first attempt to
connect always fails. The rest tests run successfully although Qpid are restarted. So the
order of tests is not important. The project is built using Maven and all its plugins are
run within +a single process+ (without fork ability).
> +The second strange+ thing is that the behaivor of Qpid slightly differs using two different
*OpenJDK* versions.
> In a case of *1.8.0_131* version the broker accepts a transport connection but rejects
"OPEN" frame with the next error:
> {code:java}
> io.vertx.core.impl.NoStackTraceThrowable: Error{condition=amqp:not-found, description='Unknown
hostname in connection open: 'default'', info=null}
> {code}
>  In a case of *1.8.0_161* version the broker rejects a transport connection instantly
with the next exception:
> {code:java}
> io.vertx.core.VertxException: Disconnected
>  at io.vertx.proton.impl.ProtonClientImpl.lambda$null$0(ProtonClientImpl.java:80) ~[vertx-proton-3.5.0.jar:?]
>  at io.vertx.proton.impl.ProtonConnectionImpl.fireDisconnect(ProtonConnectionImpl.java:374)
~[vertx-proton-3.5.0.jar:?]
>  at io.vertx.proton.impl.ProtonTransport.handleSocketEnd(ProtonTransport.java:89) ~[vertx-proton-3.5.0.jar:?]
>  at io.vertx.core.net.impl.NetSocketImpl.handleClosed(NetSocketImpl.java:345) ~[vertx-core-3.5.0.jar:?]
>  at io.vertx.core.impl.ContextImpl.lambda$wrapTask$2(ContextImpl.java:342) ~[vertx-core-3.5.0.jar:?]
>  at io.vertx.core.impl.ContextImpl.executeFromIO(ContextImpl.java:200) [vertx-core-3.5.0.jar:?]
>  at io.vertx.core.net.impl.VertxHandler.channelInactive(VertxHandler.java:134) [vertx-core-3.5.0.jar:?]
>  at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245)
[netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231)
[netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224)
[netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1354)
[netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245)
[netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231)
[netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:917)
[netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:763) [netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
[netty-common-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403)
[netty-common-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) [netty-transport-4.1.15.Final.jar:4.1.15.Final]
>  at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
[netty-common-4.1.15.Final.jar:4.1.15.Final]
>  at java.lang.Thread.run(Thread.java:748) [?:1.8.0_161-debug]{code}



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