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https://issues.apache.org/jira/browse/CAMEL-9195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14946307#comment-14946307
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Claus Ibsen commented on CAMEL-9195:
------------------------------------
Thanks for reporting. Sound like some buffer is not released or something.
> Memory leak in UndertowProducer
> -------------------------------
>
> Key: CAMEL-9195
> URL: https://issues.apache.org/jira/browse/CAMEL-9195
> Project: Camel
> Issue Type: Bug
> Components: camel-undertow
> Affects Versions: 2.16.0
> Reporter: James Netherton
>
> The UndertowProducer class leaks memory over time due to the repeated
> creation of ByteBufferSlicePool for each HTTP client request. My
> understanding of this class is that instances of it should be limited and
> cached if possible.
> Here's an example RouteBuilder to replicate the issue. In a short time it
> will result in an OutOfMemoryError.
> {code}
> public class UndertowRouteBuilder extends RouteBuilder {
> @Override
> public void configure() throws Exception {
>
> from("undertow:http://localhost:8080/test";).to("log:undertow?showAll=true");
> from("timer:foo?period=5000").transform(constant("hello
> world")).to("undertow:http://localhost:8080/test";);
> }
> }
> {code}
> {code}
> org.apache.camel.CamelExecutionException: Exception occurred during execution
> on the exchange: Exchange[ID-worklaptop-50317-1444141557043-2-30][Message:
> hello world]
> at
> org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1658)
> at
> org.apache.camel.impl.DefaultExchange.setException(DefaultExchange.java:345)
> at
> org.apache.camel.processor.SendProcessor.process(SendProcessor.java:156)
> at
> org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
> at
> org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:460)
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
> at org.apache.camel.processor.Pipeline.process(Pipeline.java:121)
> at org.apache.camel.processor.Pipeline.process(Pipeline.java:83)
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
> at
> org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:165)
> at
> org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:73)
> at java.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505)
> Caused by: java.lang.OutOfMemoryError: Direct buffer memory
> at java.nio.Bits.reserveMemory(Bits.java:658)
> at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
> at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311)
> at org.xnio.BufferAllocator$2.allocate(BufferAllocator.java:57)
> at org.xnio.BufferAllocator$2.allocate(BufferAllocator.java:55)
> at org.xnio.ByteBufferSlicePool.allocate(ByteBufferSlicePool.java:143)
> at
> io.undertow.client.http.HttpRequestConduit.processWrite(HttpRequestConduit.java:98)
> at
> io.undertow.client.http.HttpRequestConduit.write(HttpRequestConduit.java:460)
> at
> io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.write(AbstractFixedLengthStreamSinkConduit.java:106)
> at
> org.xnio.conduits.ConduitStreamSinkChannel.write(ConduitStreamSinkChannel.java:150)
> at
> io.undertow.channels.DetachableStreamSinkChannel.write(DetachableStreamSinkChannel.java:240)
> at
> org.apache.camel.component.undertow.UndertowProducer$UndertowProducerCallback.completed(UndertowProducer.java:166)
> at
> org.apache.camel.component.undertow.UndertowProducer$UndertowProducerCallback.completed(UndertowProducer.java:121)
> at
> io.undertow.client.http.HttpClientExchange.invokeReadReadyCallback(HttpClientExchange.java:190)
> at
> io.undertow.client.http.HttpClientConnection.initiateRequest(HttpClientConnection.java:293)
> at
> io.undertow.client.http.HttpClientConnection.sendRequest(HttpClientConnection.java:228)
> at
> org.apache.camel.component.undertow.UndertowProducer.process(UndertowProducer.java:102)
> at
> org.apache.camel.processor.SendProcessor.process(SendProcessor.java:141)
> ... 10 more
> {code}
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