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https://issues.apache.org/jira/browse/HTTPCORE-575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Gao updated HTTPCORE-575:
--------------------------------
Description:
Hi, I'm using below components:
httpcore-nio:4.4.10
httpasyncclient:4.1.4.3
jdk:1.8.0.131
and It caused deadlock when closing the connection pool:
below is thread 1 stack:
{code:java}
sitemon-async-http-client-io-dispatch-thread20-48
priority:5 - threadId:0x00000000022b6800 - nativeId:0x2068 - nativeId
(decimal):8296 - state:BLOCKED
stackTrace:
java.lang.Thread.State: BLOCKED (on object monitor)
at
java.nio.channels.spi.AbstractInterruptibleChannel.close(AbstractInterruptibleChannel.java:111)
- waiting to lock <0x00000007495b4738> (a java.lang.Object)
at org.apache.http.impl.nio.reactor.IOSessionImpl.close(IOSessionImpl.java:227)
- locked <0x00000007495b4808> (a sun.nio.ch.SelectionKeyImpl)
at
org.apache.http.impl.nio.reactor.IOSessionImpl.shutdown(IOSessionImpl.java:255)
at
org.apache.http.impl.nio.reactor.AbstractIODispatch.connected(AbstractIODispatch.java:89)
at
org.apache.http.impl.nio.client.LMIODispatcher.connected(LMIODispatcher.java:32)
at
org.apache.http.impl.nio.reactor.BaseIOReactor.sessionCreated(BaseIOReactor.java:248)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.processNewChannels(AbstractIOReactor.java:427)
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:287)
at
org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
at
org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:588)
at java.lang.Thread.run(Thread.java:748)
{code}
below is thread 2 stack:
{code:java}
sitemon-webservice-task-thread-11-3 priority:5 - threadId:0x00007fb840052800 -
nativeId:0x1ee9 - nativeId (decimal):7913 - state:BLOCKED stackTrace:
java.lang.Thread.State: BLOCKED (on object monitor) at
java.nio.channels.spi.AbstractSelectionKey.cancel(AbstractSelectionKey.java:70)
- waiting to lock <0x00000007495b4808> (a sun.nio.ch.SelectionKeyImpl) at
java.nio.channels.spi.AbstractSelectableChannel.implCloseChannel(AbstractSelectableChannel.java:240)
- locked <0x00000007495bb1f0> (a java.lang.Object) at
java.nio.channels.spi.AbstractInterruptibleChannel.close(AbstractInterruptibleChannel.java:115)
- locked <0x00000007495b4738> (a java.lang.Object) at
org.apache.http.impl.nio.reactor.SessionRequestImpl.cancel(SessionRequestImpl.java:216)
....
at
org.apache.http.nio.pool.AbstractNIOConnPool.shutdown(AbstractNIOConnPool.java:217)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
{code}
Please note the object in bold (*0x00000007495b4738 and*
*0x00000007495b4808***)
in thread 1, it get locks with selection key -> then channel
in thread 2, it get locks with channel -> then selection key.
was:
Hi, I'm using below components:
httpcore-nio:4.4.10
httpasyncclient:4.1.4.3
jdk:1.8.0.131
and It caused deadlock when closing the connection pool:
below is thread 1 stack:
{code:java}
h2. {color:#cc3300}sitemon-async-http-client-io-dispatch-thread20-48{color}
priority:5 - threadId:0x00000000022b6800 - nativeId:0x2068 - nativeId
(decimal):8296 - state:BLOCKED
stackTrace:
java.lang.Thread.State: BLOCKED (on object monitor)
at
java.nio.channels.spi.AbstractInterruptibleChannel.close({color:#000080}AbstractInterruptibleChannel.java:111{color})
- waiting to lock *<0x00000007495b4738>* (a java.lang.Object)
at
org.apache.http.impl.nio.reactor.IOSessionImpl.close({color:#000080}IOSessionImpl.java:227{color})
- locked *<0x00000007495b4808>* (a sun.nio.ch.SelectionKeyImpl)
at
org.apache.http.impl.nio.reactor.IOSessionImpl.shutdown({color:#000080}IOSessionImpl.java:255{color})
at
org.apache.http.impl.nio.reactor.AbstractIODispatch.connected({color:#000080}AbstractIODispatch.java:89{color})
at
org.apache.http.impl.nio.client.LMIODispatcher.connected({color:#000080}LMIODispatcher.java:32{color})
at
org.apache.http.impl.nio.reactor.BaseIOReactor.sessionCreated({color:#000080}BaseIOReactor.java:248{color})
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.processNewChannels({color:#000080}AbstractIOReactor.java:427{color})
at
org.apache.http.impl.nio.reactor.AbstractIOReactor.execute({color:#000080}AbstractIOReactor.java:287{color})
at
org.apache.http.impl.nio.reactor.BaseIOReactor.execute({color:#000080}BaseIOReactor.java:104{color})
at
org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run({color:#000080}AbstractMultiworkerIOReactor.java:588{color})
at java.lang.Thread.run({color:#000080}Thread.java:748{color})
{code}
below is thread 2 stack:
{code:java}
{color:#cc3300}sitemon-webservice-task-thread-11-3{color}
priority:5 - threadId:0x00007fb840052800 - nativeId:0x1ee9 - nativeId
(decimal):7913 - state:BLOCKED
stackTrace:
java.lang.Thread.State: BLOCKED (on object monitor)
at
java.nio.channels.spi.AbstractSelectionKey.cancel({color:#000080}AbstractSelectionKey.java:70{color})
- waiting to lock *<0x00000007495b4808>* (a sun.nio.ch.SelectionKeyImpl)
at
java.nio.channels.spi.AbstractSelectableChannel.implCloseChannel({color:#000080}AbstractSelectableChannel.java:240{color})
- locked *<0x00000007495bb1f0>* (a java.lang.Object)
at
java.nio.channels.spi.AbstractInterruptibleChannel.close({color:#000080}AbstractInterruptibleChannel.java:115{color})
- locked *<0x00000007495b4738>* (a java.lang.Object)
at
org.apache.http.impl.nio.reactor.SessionRequestImpl.cancel({color:#000080}SessionRequestImpl.java:216{color})
at
org.apache.http.nio.pool.AbstractNIOConnPool.shutdown({color:#000080}AbstractNIOConnPool.java:217{color})
at
com.logicmonitor.service.processors.website.async.AsyncWebServiceTask._finish({color:#000080}AsyncWebServiceTask.java:594{color})
//....suppressed
at
java.util.concurrent.ThreadPoolExecutor.runWorker({color:#000080}ThreadPoolExecutor.java:1142{color})
at
java.util.concurrent.ThreadPoolExecutor$Worker.run({color:#000080}ThreadPoolExecutor.java:617{color})
at java.lang.Thread.run({color:#000080}Thread.java:748{color})
{code}
Please note the object in bold (*0x00000007495b4738 and*
*0x00000007495b4808***)
in thread 1, it get locks with selection key -> then channel
in thread 2, it get locks with channel -> then selection key.
> Deadlock found in IOSessionImpl in httpcomponents-core
> ------------------------------------------------------
>
> Key: HTTPCORE-575
> URL: https://issues.apache.org/jira/browse/HTTPCORE-575
> Project: HttpComponents HttpCore
> Issue Type: Bug
> Components: HttpCore, HttpCore NIO
> Affects Versions: 4.4.10
> Reporter: Edward Gao
> Priority: Major
>
> Hi, I'm using below components:
> httpcore-nio:4.4.10
> httpasyncclient:4.1.4.3
> jdk:1.8.0.131
> and It caused deadlock when closing the connection pool:
> below is thread 1 stack:
> {code:java}
> sitemon-async-http-client-io-dispatch-thread20-48
> priority:5 - threadId:0x00000000022b6800 - nativeId:0x2068 - nativeId
> (decimal):8296 - state:BLOCKED
> stackTrace:
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> java.nio.channels.spi.AbstractInterruptibleChannel.close(AbstractInterruptibleChannel.java:111)
> - waiting to lock <0x00000007495b4738> (a java.lang.Object)
> at
> org.apache.http.impl.nio.reactor.IOSessionImpl.close(IOSessionImpl.java:227)
> - locked <0x00000007495b4808> (a sun.nio.ch.SelectionKeyImpl)
> at
> org.apache.http.impl.nio.reactor.IOSessionImpl.shutdown(IOSessionImpl.java:255)
> at
> org.apache.http.impl.nio.reactor.AbstractIODispatch.connected(AbstractIODispatch.java:89)
> at
> org.apache.http.impl.nio.client.LMIODispatcher.connected(LMIODispatcher.java:32)
> at
> org.apache.http.impl.nio.reactor.BaseIOReactor.sessionCreated(BaseIOReactor.java:248)
> at
> org.apache.http.impl.nio.reactor.AbstractIOReactor.processNewChannels(AbstractIOReactor.java:427)
> at
> org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:287)
> at
> org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
> at
> org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:588)
> at java.lang.Thread.run(Thread.java:748)
> {code}
>
> below is thread 2 stack:
> {code:java}
> sitemon-webservice-task-thread-11-3 priority:5 - threadId:0x00007fb840052800
> - nativeId:0x1ee9 - nativeId (decimal):7913 - state:BLOCKED stackTrace:
> java.lang.Thread.State: BLOCKED (on object monitor) at
> java.nio.channels.spi.AbstractSelectionKey.cancel(AbstractSelectionKey.java:70)
> - waiting to lock <0x00000007495b4808> (a sun.nio.ch.SelectionKeyImpl) at
> java.nio.channels.spi.AbstractSelectableChannel.implCloseChannel(AbstractSelectableChannel.java:240)
> - locked <0x00000007495bb1f0> (a java.lang.Object) at
> java.nio.channels.spi.AbstractInterruptibleChannel.close(AbstractInterruptibleChannel.java:115)
> - locked <0x00000007495b4738> (a java.lang.Object) at
> org.apache.http.impl.nio.reactor.SessionRequestImpl.cancel(SessionRequestImpl.java:216)
>
> ....
> at
> org.apache.http.nio.pool.AbstractNIOConnPool.shutdown(AbstractNIOConnPool.java:217)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> Please note the object in bold (*0x00000007495b4738 and*
> *0x00000007495b4808***)
> in thread 1, it get locks with selection key -> then channel
> in thread 2, it get locks with channel -> then selection key.
>
>
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