Ben Tindall created HTTPASYNC-161:
-------------------------------------
Summary: HttpAsyncClient 5.0 thread leak
Key: HTTPASYNC-161
URL: https://issues.apache.org/jira/browse/HTTPASYNC-161
Project: HttpComponents HttpAsyncClient
Issue Type: Bug
Reporter: Ben Tindall
It seems that HttpAsyncClient doesn't close all its threads with the close()
operation. Consider the following test:
{code:java}
@Test
public void leakApache() throws Exception {
for (int i = 0; i < 10000; i++) {
CloseableHttpAsyncClient client = null;
try {
client = HttpAsyncClientBuilder.create().build();
System.out.println(i);
} catch (Throwable e) {
e.printStackTrace();
} finally {
if (client != null)
client.close();
}
Thread.sleep(10);
}
Thread.sleep(300000);
}
{code}
After around 280 iterations I start seeing this error message:
{quote}java.lang.IllegalStateException: Unexpected failure opening I/O selector
at
org.apache.hc.core5.reactor.AbstractSingleCoreIOReactor.<init>(AbstractSingleCoreIOReactor.java:60)
at
org.apache.hc.core5.reactor.SingleCoreIOReactor.<init>(SingleCoreIOReactor.java:81)
at
org.apache.hc.core5.reactor.DefaultConnectingIOReactor.<init>(DefaultConnectingIOReactor.java:71)
at
org.apache.hc.client5.http.impl.async.HttpAsyncClientBuilder.build(HttpAsyncClientBuilder.java:924)
at com.mimecast.micro.rest.BenTest.leakApache(BenTest.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at
com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at
com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Caused by: java.io.IOException: Too many open files
at sun.nio.ch.IOUtil.makePipe(Native Method)
at sun.nio.ch.KQueueSelectorImpl.<init>(KQueueSelectorImpl.java:84)
at
sun.nio.ch.KQueueSelectorProvider.openSelector(KQueueSelectorProvider.java:42)
at java.nio.channels.Selector.open(Selector.java:227)
at
org.apache.hc.core5.reactor.AbstractSingleCoreIOReactor.<init>(AbstractSingleCoreIOReactor.java:58)
... 26 more
{quote}
If I run lsof i see around 10k files. These files do not get released until the
whole test closes.
Is there something I'm missing?
Thanks,
Ben
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