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[Android] ConcurrentModification exception for frameMetricsAggregator

See original GitHub issue

Environment

How do you use Sentry? sentry.io

Which SDK and version? Sentry react native. 3.0.0

Steps to Reproduce

Some of the app launches show following stack trace:

java.util.ConcurrentModificationException: null
    at java.util.ArrayList$Itr.next(ArrayList.java:860)
    at android.view.View.registerPendingFrameMetricsObservers(View.java:6363)
    at android.view.View.dispatchAttachedToWindow(View.java:17755)
    at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3417)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1932)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1647)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7595)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:988)
    at android.view.Choreographer.doCallbacks(Choreographer.java:800)
    at android.view.Choreographer.doFrame(Choreographer.java:713)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:974)
    at android.os.Handler.handleCallback(Handler.java:790)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:6977)
    at java.lang.reflect.Method.invoke(Method.java)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:528)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:910)

Expected Result

No error

Here is my reasoning: RNSentryModule is the only package registering frameMetricsAggregator.

I think the temp fix would be to disable perf tracking via turning off enableAutoPerformanceTracking, but this seems like something worth looking into.

Actual Result

java.util.ConcurrentModificationException: null
    at java.util.ArrayList$Itr.next(ArrayList.java:860)
    at android.view.View.registerPendingFrameMetricsObservers(View.java:6363)
    at android.view.View.dispatchAttachedToWindow(View.java:17755)
    at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3417)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1932)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1647)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7595)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:988)
    at android.view.Choreographer.doCallbacks(Choreographer.java:800)
    at android.view.Choreographer.doFrame(Choreographer.java:713)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:974)
    at android.os.Handler.handleCallback(Handler.java:790)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:6977)
    at java.lang.reflect.Method.invoke(Method.java)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:528)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:910)

Issue Analytics

State:
Created 2 years ago
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

jayshah-swiggycommented, Nov 10, 2021

Since it is a race condition, it is hard to reporduce, we get about 1 events for every 1k users. More over releasing with disabled auto perf tracking, fixed the issue for us. Zero issues since this disabling. Requesting you to investigate the same.

0reactions

marandanetocommented, Nov 10, 2021

thanks @jayshah-swiggy we will have a look

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