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From "Victor Dogaru (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QUARKS-130) Application hangs when trying to read commands from iotf
Date Mon, 27 Jun 2016 22:47:57 GMT

    [ https://issues.apache.org/jira/browse/QUARKS-130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15351989#comment-15351989
] 

Victor Dogaru commented on QUARKS-130:
--------------------------------------

Closing issue based on Samantha's [comment|https://issues.apache.org/jira/browse/QUARKS-130?focusedCommentId=15233535&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15233535]

> Application hangs when trying to read commands from iotf
> --------------------------------------------------------
>
>                 Key: QUARKS-130
>                 URL: https://issues.apache.org/jira/browse/QUARKS-130
>             Project: Quarks
>          Issue Type: Bug
>          Components: Runtime
>    Affects Versions: 0.4.0
>         Environment: RaspberryPi 2 
>            Reporter: Samantha Chan
>
> In my application, I have this:
>      IotDevice device =  new IotfDevice(topology, new File("./device.cfg")); 
>        
>  TStream<JsonObject> json = dry.map(v -> {
>         	Reading reading = new Reading(v, soil.isSprinklerOn());
>         	return reading.toJsonObject();
>         });
>         
>         device.events(json, "waterRequest", QoS.FIRE_AND_FORGET);
>         
>         // receive commands from IotF
>        TStream<JsonObject> responses = device.commands(new String[0]);
>        responses.print();
>        
> This application runs fine on my macbook.  But the same code cannot be run on Raspberry
Pi.
> The application seems to just hang.
> If I comment out the call `device.command`, the application will run.
> Here's the java log for the hanging application:
> Full thread dump Java HotSpot(TM) Client VM (25.65-b01 mixed mode):
> "pool-1-thread-21-1c8392d5-ef47-402c-8a81-71dec0a61598_JOB_0" #28 prio=5 os_prio=0 tid=0x00893400
nid=0xddb waiting on condition [0x63d4e000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
> 	at java.lang.Thread.sleep(Native Method)
> 	at quarks.oplet.functional.Events.lambda$start$0(Events.java:56)
> 	at quarks.oplet.functional.Events$$Lambda$23/20593183.run(Unknown Source)
> 	at quarks.runtime.etiao.ThreadFactoryTracker$2.run(ThreadFactoryTracker.java:70)
> 	at java.lang.Thread.run(Thread.java:745)
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> 	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> 	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> 	at quarks.runtime.etiao.TrackingScheduledExecutor$TrackedFuture.run(TrackingScheduledExecutor.java:188)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at quarks.runtime.etiao.ThreadFactoryTracker$2.run(ThreadFactoryTracker.java:70)
> 	at java.lang.Thread.run(Thread.java:745)
> "pool-1-thread-13-1c8392d5-ef47-402c-8a81-71dec0a61598_JOB_0" #20 prio=5 os_prio=0 tid=0x6451e000
nid=0xdda waiting on condition [0x63d9e000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x6a6b6cf8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at quarks.oplet.plumbing.Isolate.run(Isolate.java:54)
> 	at quarks.runtime.etiao.ThreadFactoryTracker$2.run(ThreadFactoryTracker.java:70)
> 	at java.lang.Thread.run(Thread.java:745)
> "DestroyJavaVM" #8 prio=5 os_prio=0 tid=0x76107800 nid=0xdc0 waiting on condition [0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "Service Thread" #6 daemon prio=9 os_prio=0 tid=0x76182c00 nid=0xdc6 runnable [0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "C1 CompilerThread0" #5 daemon prio=9 os_prio=0 tid=0x7617f800 nid=0xdc5 waiting on condition
[0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "Signal Dispatcher" #4 daemon prio=9 os_prio=0 tid=0x7617e000 nid=0xdc4 waiting on condition
[0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "Finalizer" #3 daemon prio=8 os_prio=0 tid=0x76162800 nid=0xdc3 in Object.wait() [0x64f9d000]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x6a5f4480> (a java.lang.ref.ReferenceQueue$Lock)
> 	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
> 	- locked <0x6a5f4480> (a java.lang.ref.ReferenceQueue$Lock)
> 	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
> 	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
> "Reference Handler" #2 daemon prio=10 os_prio=0 tid=0x76161000 nid=0xdc2 in Object.wait()
[0x64fed000]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x6a5f4620> (a java.lang.ref.Reference$Lock)
> 	at java.lang.Object.wait(Object.java:502)
> 	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)
> 	- locked <0x6a5f4620> (a java.lang.ref.Reference$Lock)
> "VM Thread" os_prio=0 tid=0x7615dc00 nid=0xdc1 runnable 
> "VM Periodic Task Thread" os_prio=0 tid=0x76184c00 nid=0xdc7 waiting on condition 
> JNI global references: 330
> Heap
>  def new generation   total 4864K, used 4260K [0x65800000, 0x65d40000, 0x6a540000)
>   eden space 4352K,  86% used [0x65800000, 0x65ba9158, 0x65c40000)
>   from space 512K,  99% used [0x65cc0000, 0x65d3ffe8, 0x65d40000)
>   to   space 512K,   0% used [0x65c40000, 0x65c40000, 0x65cc0000)
>  tenured generation   total 11008K, used 3407K [0x6a540000, 0x6b000000, 0x74000000)
>    the space 11008K,  30% used [0x6a540000, 0x6a893d18, 0x6a893e00, 0x6b000000)
>  Metaspace       used 6095K, capacity 6329K, committed 6424K, reserved 6448K



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