Closed
Description
[READ] Step 1: Are you in the right place?
[REQUIRED] Step 2: Describe your environment
- Xcode version: 10.3
- Firebase SDK version: 6.7.0
- Firebase Component: Firestore
- Component version: 1.4.4
[REQUIRED] Step 3: Describe the problem
Firestore crashes when trying to write data
Steps to reproduce:
Don't have exact steps. Stack trace:
Fatal Exception: NSInternalInconsistencyException FIRESTORE INTERNAL ASSERTION FAILED: Expected to be called by the executor associated with this queue (expected executor: 'com.google.firebase.firestore', actual executor: 'com.apple.main-thread') (expected executor_->IsCurrentExecutor()) Fatal Exception: NSInternalInconsistencyException 0 CoreFoundation 0x18763e98c __exceptionPreprocess 1 libobjc.A.dylib 0x1868179f8 objc_exception_throw 2 CoreFoundation 0x187558098 +[_CFXNotificationTokenRegistration keyCallbacks] 3 Foundation 0x188068de8 -[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:] 4 Smart Home 0x103830750 firebase::firestore::util::internal::Fail(char const*, char const*, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) 5 Smart Home 0x103830868 firebase::firestore::util::internal::Fail(char const*, char const*, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*) 6 Smart Home 0x103789040 firebase::firestore::util::AsyncQueue::VerifyIsCurrentExecutor() const 7 Smart Home 0x1037891b0 firebase::firestore::util::AsyncQueue::ExecuteBlocking(std::__1::function<void ()> const&) 8 Smart Home 0x10378fad4 firebase::firestore::remote::ConnectivityMonitorApple::OnReachabilityChanged(unsigned int) 9 SystemConfiguration 0x1883b0118 reachPerformAndUnlock 10 libdispatch.dylib 0x18707ca38 _dispatch_call_block_and_release 11 libdispatch.dylib 0x18707d7d4 _dispatch_client_callout 12 libdispatch.dylib 0x18705d9e4 _dispatch_main_queue_callback_4CF$VARIANT$armv81 13 CoreFoundation 0x1875d032c __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ 14 CoreFoundation 0x1875cb264 __CFRunLoopRun 15 CoreFoundation 0x1875ca7c0 CFRunLoopRunSpecific 16 GraphicsServices 0x1897cb79c GSEventRunModal 17 UIKitCore 0x1b3f87c38 UIApplicationMain 18 Smart Home 0x102f8b6c0 main (<compiler-generated>) 19 libdyld.dylib 0x18708e8e0 start Relevant Code:
My Firestore database initialization is going on a dedicated dispatch queue and my write requests also run in the same queue. So, for the Firestore I always use one exact dispatch queue.
// very simplified version of my firestore app usage let dispatchQueue = DispatchQueue(label: "my label", qos: .userInitiated) dispatchQueue.async { // then lazy property initialize Firestore on this queu private lazy var db: Firestore = { let db = Firestore.firestore() db.settings.dispatchQueue = self.dispatchQueue return db }() // then on this queue I'm creating document references and trying to write data let document = db.collection("some").document("some") document.setData([id: json], merge: true) } 