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Posted to issues@plc4x.apache.org by "Turker TUNALI (Jira)" <ji...@apache.org> on 2020/09/09 09:21:00 UTC
[jira] [Updated] (PLC4X-245) [Modbus] Apache NiFi processor throws
java.io.IOException after a while
[ https://issues.apache.org/jira/browse/PLC4X-245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Turker TUNALI updated PLC4X-245:
--------------------------------
Attachment: nifi-app.log
> [Modbus] Apache NiFi processor throws java.io.IOException after a while
> -----------------------------------------------------------------------
>
> Key: PLC4X-245
> URL: https://issues.apache.org/jira/browse/PLC4X-245
> Project: Apache PLC4X
> Issue Type: Bug
> Components: Driver-Modbus, Integration-NiFi
> Affects Versions: 0.7.0
> Environment: Apache NiFi 1.12.0, Win2012 Server, PLX4X Nar 0.7.0 (https://mvnrepository.com/artifact/org.apache.plc4x/plc4j-nifi-plc4x-nar/0.7.0)
> Reporter: Turker TUNALI
> Priority: Major
> Attachments: modbustrace_200828.pcapng, modbustrace_200828_4.pcapng, nifi-app.log
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> My Plc4xSourceProcessor's, PLC connection String is "modbus:tcp://[10.0.2.238:502?slave=1|http://10.0.2.238:502/?slave=1]" and PLC resource address String is "test1=holding-register:1"
>
> I can get the values for 5-10 times with 5 second intervals but then I get below exception. I can read the values with the Modbus Poll application, so most probably the PLC4X side has a problem.
>
> I may also get some other exceptions when starting the processor, which are also below.
>
> PS: Wireshark trace is attached. I've read 16 times then I get the exception.
>
> *
> -- This is the exception which I get after some successful read operations.*
> 2020-08-27 13:19:06,091 WARN [nioEventLoopGroup-8-1] io.netty.channel.DefaultChannelPipeline An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
> java.io.IOException: An existing connection was forcibly closed by the remote host
> at sun.nio.ch.SocketDispatcher.read0(Native Method)
> at sun.nio.ch.SocketDispatcher.read(Unknown Source)
> at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
> at sun.nio.ch.IOUtil.read(Unknown Source)
> at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
> at io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:253)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1133)
> at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:350)
> at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
> at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
> at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
> at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
> at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
> at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.lang.Thread.run(Unknown Source)
>
>
> -- This is the exception which I get sometimes when starting up the processor.*
> 2020-08-27 13:17:16,813 WARN [Timer-Driven Process Thread-11] o.a.n.controller.tasks.ConnectableTask Administratively Yielding Plc4xSourceProcessor[id=2f12f5b4-0174-1000-724e-a53ba0fc1652] due to uncaught Exception: java.lang.NullPointerException
> java.lang.NullPointerException: null
> at org.apache.plc4x.nifi.Plc4xSourceProcessor.onTrigger(Plc4xSourceProcessor.java:50)
> at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
> at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1174)
> at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:213)
> at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
> at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110)
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
> at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
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