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From "Joshua Andrews (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HTTPASYNC-41) Possible Multithreading issue (when used with Akka?)
Date Fri, 17 May 2013 18:01:21 GMT
Joshua Andrews created HTTPASYNC-41:
---------------------------------------

             Summary: Possible Multithreading issue (when used with Akka?)
                 Key: HTTPASYNC-41
                 URL: https://issues.apache.org/jira/browse/HTTPASYNC-41
             Project: HttpComponents HttpAsyncClient
          Issue Type: Bug
    Affects Versions: 4.0-beta4
         Environment: Linux
            Reporter: Joshua Andrews
            Priority: Minor


I'm not sure if this a bug or just me doing something wrong.

I have actor instances, that execute a request with a future for setting some state - real
simple stuff. It works great when I have 1 Session, but as soon as I add another this happens.

session starting
session starting
ERROR [org.apache.http.impl.nio.client.InternalHttpAsyncClient] I/O reactor terminated abnormally
java.lang.IllegalStateException: Illegal state ACTIVE
        at org.apache.http.util.Asserts.check(Asserts.java:40)
        at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:316)
        at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:169)
        at org.apache.http.impl.nio.client.InternalHttpAsyncClient.doExecute(InternalHttpAsyncClient.java:101)
        at org.apache.http.impl.nio.client.InternalHttpAsyncClient.access$000(InternalHttpAsyncClient.java:56)
        at org.apache.http.impl.nio.client.InternalHttpAsyncClient$1.run(InternalHttpAsyncClient.java:91)

ERROR [actors.Session] Request cannot be executed; I/O reactor status: SHUT_DOWN
java.lang.IllegalStateException: Request cannot be executed; I/O reactor status: SHUT_DOWN
        at org.apache.http.util.Asserts.check(Asserts.java:40)
        at org.apache.http.impl.nio.client.InternalHttpAsyncClient.execute(InternalHttpAsyncClient.java:171)
        at org.apache.http.impl.nio.client.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:63)
        at org.apache.http.impl.nio.client.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:93)
        at org.apache.http.impl.nio.client.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:78)
        at actors.FutureBridge$.bridge(bridge.scala:137)
        at actors.AsyncClient.POSTPayload(bridge.scala:296)
        at engines.MobileHelper$.getAuthToken(MobileHelper.scala:26)
        at actors.Session$$anonfun$receive$1.applyOrElse(Session.scala:92)
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:425)
        at akka.actor.ActorCell.invoke(ActorCell.scala:386)
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:230)
        at akka.dispatch.Mailbox.run(Mailbox.scala:212)
        at akka.dispatch.ForkJoinExecutorConfigurator$MailboxExecutionTask.exec(AbstractDispatcher.scala:506)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:262)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:975)
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1478)
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)


Each actor creates its own instance of my actors.AsyncClient, which is basically just a wrapper
around the apache client, and maps Java futures to akka futures, it does not support shutdown
of the client at all.

Any advice on how to debug this?

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