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Which records will be downloaded when CKFetchRecordChangesOperation will called with nil token?


Which records will be downloaded when CKFetchRecordChangesOperation will called with nil token?

By : user2953163
Date : November 20 2020, 01:01 AM
hope this fix your issue CKFetchRecordChangesOperation has nothing to do with CKSubscription. Instead it will just return all the changes to all recordTypes.
The documentation says this about the change token:
code :


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CKFetchRecordChangesOperation - moreComing

CKFetchRecordChangesOperation - moreComing


By : user2357981
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , , You should define a weak changesoperation like this
code :
__weak CKFetchNotificationChangesOperation *weakChangesOperation = changesOperation;
changesOperation.fetchRecordChangesCompletionBlock = ^(CKServerChangeToken *serverChangeToken, NSData *clientChangeTokenData, NSError *operationError){
    ...
    if(weakChangesOperation.moreComing){
    }
CKFetchRecordChangesOperation what is the returned clientChangeToken?

CKFetchRecordChangesOperation what is the returned clientChangeToken?


By : David Locke
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Besides the previousServerChangeToken there is no other mechanism for controlling what should be returned by the CKFetchRecordChangesOperation. It will just return the changes. This will include the changes that you have made yourself.
If that's a problem, then you could try using subscriptions instead. these will by default exclude the changes that are made by yourself.
CKFetchRecordChangesOperation returns junk data first

CKFetchRecordChangesOperation returns junk data first


By : Dheeraj Vuppuluri
Date : March 29 2020, 07:55 AM
wish of those help This can happen if the zone has had lots of records deleted in it. The server scans through all of the changes for the zone and then drops changes for records that have been deleted. Sometimes this can result in a batch of changes with zero record changes, but moreComing set to true.
Take a look at the new fetchAllChanges flag on CKFetchRecordZoneChangesOperation in iOS 10/macOS 10.12. CloudKit will pipeline fetch changes requests for you and you'll just see record changes and zone change tokens until everything in the zone has been fetched.
cloudKit: CKFetchRecordChangesOperation in public database

cloudKit: CKFetchRecordChangesOperation in public database


By : cuuddii
Date : March 29 2020, 07:55 AM
Hope that helps The apple documentation for CKFetchRecordChangesOperation states:
CloudKit: CKFetchRecordChangesOperation, CKServerChangeToken and Delta Download

CloudKit: CKFetchRecordChangesOperation, CKServerChangeToken and Delta Download


By : Manon D
Date : March 29 2020, 07:55 AM
To fix the issue you can do I found a time to write an answer for this question. I won't dig into implementation, but I will discuss the concept.
CloudKit provides a way to data synchronisation between your device and the CloudKit server. What I use to establish synchronisation process in my case between iPhone and server only (again, if you have iPhone + iPad app, the process require more steps.):
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