[CAMEL-4581] NPE using seda (with concurrentConsumers) and stream endopoints

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.8.1
• Fix Version/s: 2.7.5, 2.8.3, 2.9.0
• Estimated Complexity: Unknown
• Assignee: Willem Jiang
• Reporter: Lorenzo Luconi Trombacchi
• Created: 25/Oct/11 13:03
• Updated: 27/Oct/11 12:19
• Resolved: 27/Oct/11 12:19

Description

I found an issue with seda and stream endpoints.
Using more then 1 concurrent consumers for seda and using "stream:out" as destination endopoint , I sometimes receive some NullPointerExceptions.

This is how to reproduce the problem:

context.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception

{ from("seda:sendRequest?concurrentConsumers=10") .to("stream:out"); }

});
context.start();

for ( int i = 0; i < 50000; i++ ) {
producer.sendBody("seda:sendRequest", String.format("Message %d", i));
}

And this is one of the exceptions:

2011-10-25 10:12:36,550 ERROR [org.apache.camel.processor.DefaultErrorHandler] - Failed delivery for exchangeId: ID-localhost-51879-1319530353835-0-48591. Exhausted after delivery attempt: 1 caught: java.lang.NullPointerException
java.lang.NullPointerException: null
at java.io.Writer.<init>(Writer.java:71) ~[na:1.6.0_26]
at java.io.OutputStreamWriter.<init>(OutputStreamWriter.java:113) ~[na:1.6.0_26]
at org.apache.camel.component.stream.StreamProducer.writeToStream(StreamProducer.java:135) ~[camel-stream-2.8.1.jar:2.8.1]
at org.apache.camel.component.stream.StreamProducer.process(StreamProducer.java:83) ~[camel-stream-2.8.1.jar:2.8.1]
at org.apache.camel.impl.converter.AsyncProcessorTypeConverter$ProcessorToAsyncProcessorBridge.process(AsyncProcessorTypeConverter.java:50) ~[camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.SendProcessor$2.doInAsyncProducer(SendProcessor.java:114) ~[camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.impl.ProducerCache.doInAsyncProducer(ProducerCache.java:284) ~[camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:109) ~[camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:69) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:99) ~[camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:318) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:209) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:305) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:102) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:69) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.component.seda.SedaConsumer.sendToConsumers(SedaConsumer.java:217) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.component.seda.SedaConsumer.doRun(SedaConsumer.java:155) [camel-core-2.8.1.jar:2.8.1]
at org.apache.camel.component.seda.SedaConsumer.run(SedaConsumer.java:129) [camel-core-2.8.1.jar:2.8.1]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_26]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_26]
at java.lang.Thread.run(Thread.java:680) [na:1.6.0_26]

Lorenzo