Create multiple client object will deadlock
-------------------------------------------
Key: HTTPASYNC-18
URL: https://issues.apache.org/jira/browse/HTTPASYNC-18
Project: HttpComponents HttpAsyncClient
Issue Type: Bug
Affects Versions: 4.0-beta1
Environment: Windows 7
Reporter: zhaoqz
Priority: Critical
Found one Java-level deadlock:
=============================
"I/O dispatcher 20":
waiting to lock monitor 0x0fc87f4c (object 0x299028b8, a
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector),
which is held by "I/O dispatcher 18"
"I/O dispatcher 18":
waiting to lock monitor 0x03fd6cfc (object 0x2b2d57b8, a
org.apache.http.concurrent.BasicFuture),
which is held by "I/O dispatcher 20"
Java stack information for the threads listed above:
===================================================
"I/O dispatcher 20":
at
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.connectionRequestCompleted(DefaultAsyncRequestDirector.java:508)
- waiting to lock <0x299028b8> (a
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector)
at
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.access$000(DefaultAsyncRequestDirector.java:92)
at
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector$InternalFutureCallback.completed(DefaultAsyncRequestDirector.java:552)
at
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector$InternalFutureCallback.completed(DefaultAsyncRequestDirector.java:549)
at
org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:109)
- locked <0x2b2d57b8> (a org.apache.http.concurrent.BasicFuture)
at
org.apache.http.impl.nio.conn.PoolingClientAsyncConnectionManager$InternalPoolEntryCallback.completed(PoolingClientAsyncConnectionManager.java:303)
at
org.apache.http.impl.nio.conn.PoolingClientAsyncConnectionManager$InternalPoolEntryCallback.completed(PoolingClientAsyncConnectionManager.java:285)
at
org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:109)
- locked <0x2b2d57e0> (a org.apache.http.concurrent.BasicFuture)
at
org.apache.http.nio.pool.RouteSpecificPool.completed(RouteSpecificPool.java:154)
at
org.apache.http.nio.pool.AbstractNIOConnPool.requestCompleted(AbstractNIOConnPool.java:349)
at
org.apache.http.nio.pool.AbstractNIOConnPool$InternalSessionRequestCallback.completed(AbstractNIOConnPool.java:581)
at
org.apache.http.impl.nio.reactor.SessionRequestImpl.completed(SessionRequestImpl.java:130)
- locked <0x2b2d5818> (a
org.apache.http.impl.nio.reactor.SessionRequestImpl)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.processNewChannels(AbstractIOReactor.java:424)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:291)
at
org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:106)
at
org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:601)
at java.lang.Thread.run(Unknown Source)
"I/O dispatcher 18":
at org.apache.http.concurrent.BasicFuture.cancel(BasicFuture.java:129)
- waiting to lock <0x2b2d57b8> (a
org.apache.http.concurrent.BasicFuture)
at
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.releaseResources(DefaultAsyncRequestDirector.java:368)
at
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.failed(DefaultAsyncRequestDirector.java:393)
- locked <0x299028b8> (a
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector)
at
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.responseCompleted(DefaultAsyncRequestDirector.java:467)
- locked <0x299028b8> (a
org.apache.http.impl.nio.client.DefaultAsyncRequestDirector)
at
org.apache.http.nio.protocol.HttpAsyncRequestExecutor.processResponse(HttpAsyncRequestExecutor.java:384)
at
org.apache.http.nio.protocol.HttpAsyncRequestExecutor.inputReady(HttpAsyncRequestExecutor.java:268)
at
org.apache.http.impl.nio.client.LoggingAsyncRequestExecutor.inputReady(LoggingAsyncRequestExecutor.java:99)
at
org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:192)
at
org.apache.http.impl.nio.DefaultHttpClientIODispatch.onInputReady(DefaultHttpClientIODispatch.java:125)
at
org.apache.http.impl.nio.DefaultHttpClientIODispatch.onInputReady(DefaultHttpClientIODispatch.java:49)
at
org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:112)
at
org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:160)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:342)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:320)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:280)
at
org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:106)
at
org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:601)
at java.lang.Thread.run(Unknown Source)
Found 2 deadlocks.
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