I confirmed that the issue is too much data to be synchronized.
If I trim my data set so there are only ~1k entities, the Watch app is able to sync all the data, and the time between CloudKit import start and end events is about ~10s.
When the number of entities on the order of ~10k, the Watch app CloudKit import never completes, even after leaving the app running (with debugger attached) for 15 minutes.
Is this limitation documented anywhere?
ehsan
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How are you using CloudKit API directly from the complication? My impression was Core Data for CloudKit handles all the syncing and does not expose interfaces to mange it directly. I'm facing similar issues with watchOS app staying in sync with data in CloudKit.
I was getting the error after updating my project to consolidate watchOS app extension and app targets. Adding a WKApplication key to the watch app's Info.plist (type: boolean, value: 1) fixed this for me.
Still having this issue with Xcode 12 GM and iPhone XR running iOS 13.7 and also iPhone 7 running iOS 14 GM. On a separate Mac using these devices with Xcode works, so I suspect the issue is on the Mac. What can I do to "reset" the dev environment on this Mac?
Domain: com.apple.dtdevicekit
Code: 806
Recovery Suggestion: If you are certain that Xcode supports development on this device, try disconnecting and reconnecting the device.
User Info: {
AssociatedMobileDeviceFunction = AMDeviceMountImage;
DVTRadarComponentKey = 487927;
NSLocalizedFailure = "This operation can fail if the version of the OS on the device is newer than the version of Xcode that is running.";
}-
Could not allocate a resource.
Domain: com.apple.dt.MobileDeviceErrorDomain
Code: -402653181
User Info: {
DVTRadarComponentKey = 261622;
MobileDeviceErrorCode = "(0xE8000003)";
"com.apple.dtdevicekit.stacktrace" = (
0 DTDeviceKitBase 0x0000000126ef493f DTDKCreateNSErrorFromAMDErrorCode + 220
1 DTDeviceKitBase 0x0000000126f30f58 -[DTDKMobileDeviceToken _mountDeveloperDiskImage:withError:] + 1024
2 DTDeviceKitBase 0x0000000126f31978 __58-[DTDKMobileDeviceToken mountDeveloperDiskImageWithError:]_block_invoke + 609
3 libdispatch.dylib 0x00007fff69233658 _dispatch_client_callout + 8
4 libdispatch.dylib 0x00007fff6923f6ec _dispatch_lane_barrier_sync_invoke_and_complete + 60
5 DTDeviceKitBase 0x0000000126f316b5 -[DTDKMobileDeviceToken mountDeveloperDiskImageWithError:] + 188
6 IDEiOSSupportCore 0x0000000126d85d8c __37-[DVTiOSDevice(Connect) hasConnected]_block_invoke_2 + 258
7 DVTFoundation 0x000000010ae322ba DVT_CALLING_CLIENT_BLOCK + 7
8 DVTFoundation 0x000000010ae37107 __DVTDispatchGroupAsync_block_invoke + 1191
9 libdispatch.dylib 0x00007fff692326c4 _dispatch_call_block_and_release + 12
10 libdispatch.dylib 0x00007fff69233658 _dispatch_client_callout + 8
11 libdispatch.dylib 0x00007fff69235890 _dispatch_continuation_pop + 534
12 libdispatch.dylib 0x00007fff69234f16 _dispatch_async_redirect_invoke + 703
13 libdispatch.dylib 0x00007fff69241957 _dispatch_root_queue_drain + 326
14 libdispatch.dylib 0x00007fff69242097 _dispatch_worker_thread2 + 92
15 libsystem_pthread.dylib 0x00007fff6948d9f7 _pthread_wqthread + 220
16 libsystem_pthread.dylib 0x00007fff6948cb77 start_wqthread + 15
);
}-
System Information
macOS Version 10.15.6 (Build 19G2021)
Xcode 12.0 (17218)
I am now getting this crash since installing Xcode 12 beta 6. I was not getting it in any of the previous betas. It happens on every launch, same assertion failure and callstack as above.
As a workaround, I ended up just moving the xip to a large external HDD, extracting it there, then copying the Xcode12-beta.app back over to my main volume. I had 14GB of 'purgeable' space showing in Disk Utility fwiw.