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https://issues.apache.org/jira/browse/CAMEL-8241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14325720#comment-14325720
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Angela Wickert commented on CAMEL-8241:
---------------------------------------
I've got the same problem as described.I've reduced my program on a simple
route.
I am using CentOS 6.4, jdk1.8.0_25 and the camel version 2.14.1.
this is the route:
<route id="test_exec" autoStartup="true">
<from uri="file://target/test" />
<to uri="exec:pwd" />
</route>
and this is the stracktrace:
org.apache.camel.component.exec.ExecException: Unable to execute command
ExecCommand [args=[], executable=pwd, timeout=9223372036854775807,
outFile=null, workingDir=null, useStderrOnEmptyStdout=false]
at
org.apache.camel.component.exec.impl.DefaultExecCommandExecutor.execute(DefaultExecCommandExecutor.java:81)
at
org.apache.camel.component.exec.ExecProducer.process(ExecProducer.java:46)
at
org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
at
org.apache.camel.processor.SendProcessor.process(SendProcessor.java:120)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:163)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:416)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at
org.apache.camel.component.file.GenericFileConsumer.processExchange(GenericFileConsumer.java:433)
at
org.apache.camel.component.file.GenericFileConsumer.processBatch(GenericFileConsumer.java:211)
at
org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:175)
at
org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:187)
at
org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:114)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: Stream closed
at
java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433)
at java.io.OutputStream.write(OutputStream.java:116)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
at
org.apache.commons.exec.DefaultExecutor.closeStreams(DefaultExecutor.java:288)
at
org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:364)
at
org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:160)
at
org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:147)
at
org.apache.camel.component.exec.impl.DefaultExecCommandExecutor.execute(DefaultExecCommandExecutor.java:67)
... 20 more
> Exec command failures using Java 8 on Unix
> ------------------------------------------
>
> Key: CAMEL-8241
> URL: https://issues.apache.org/jira/browse/CAMEL-8241
> Project: Camel
> Issue Type: Bug
> Components: camel-core
> Affects Versions: 2.14.0
> Environment: JDK 1.8 on Unix systems
> Reporter: Dave Heath
> Fix For: 2.14.2, 2.15.0
>
> Attachments: CamelExecTest.java
>
>
> I'm attaching a test case that shows an issue I've been running into with the
> exec command since updating my environment to Java 8. It appears that I'm
> running into a race condition where a stream is sometimes closed prematurely
> before DefaultExecutor has a chance to close it, causing
> DefaultExecCommandExecutor to throw and exit (even though the command did
> execute properly). I've tested this against the updated version of
> commons-exec as well just to make sure this hasn't somehow been fixed in that
> library.
> Please note that the attached test doesn't always fail; you may need to run
> it a few times before the error will show up.
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