Couchbase Lite Android – Failed to save remote checkpoint (HTTP 404 "No previous revision to replace")

Mobile Couchbase Lite
1

Hi,
I’m trying to set up a Couchbase Lite replicator in an Android Java app that connects to a client’s Couchbase Server.

Versions:

  • Couchbase Server: 7.1.0 (build 2556)
  • Couchbase Lite for Android: 3.2.3

Problem:

I’m using a pull-only replicator for a specific collection.
On the first sync, everything works fine and the documents are downloaded correctly.

However, when a change is later made on the server and I receive the update through Sync Gateway, I see the following error in the logs:

Obj=/JRepl@1931040951/C4RemoteRepl#6/Repl#12/ CorrID=33f45df1 Got error response: HTTP 404 'No previous revision to replace'

Followed by this warning:

Obj=/JRepl@1931040951/C4RemoteRepl#6/Repl#12/ CorrID=33f45df1 Coll=0 Failed to save remote checkpoint!

After that, the replicator stays in IDLE state (even though the update is correctly received), and it logs the same error every time a new change is pulled from the server.

The First time couchbase make this request:

Saving remote checkpoint 'cp-BspfbRIU7g6O8wILiwSY4TkFKhm1BPLQ29auoc76ccw=' over rev='0-1': {"time":1750434380,"local":1,"remote":"4287::4369"} ...
17:46:20.533  I  SENDING: REQ #0  {
                 	Profile: setCheckpoint
                 	collection: 0
                 	client: cp-BspfbRIU7g6O8wILiwSY4TkFKhm1BPLQ29auoc76ccw=
                 	rev: 0-1
                 	BODY: { ... } }

And everything goes well

The second time, after receiving the document updated, couchbase make this request:

SENDING: REQ #0  {
                 	Profile: setCheckpoint
                 	collection: 0
                 	client: cp-BspfbRIU7g6O8wILiwSY4TkFKhm1BPLQ29auoc76ccw=
                 	rev: 0-2
                 	BODY: { ... } }

With this answer:

RECEIVED: ERR #11  {
                 	Error-Domain: HTTP
                 	Error-Code: 404
                 	BODY: { ... } }

Question:

Why is the checkpoint failing to save with HTTP 404?
Is there something I need to reset or configure differently on the Sync Gateway or Couchbase Server to allow proper checkpoint updates?
Any idea how to fix or work around this?

Thanks in advance!

2

Hi, do you have complete logs?