Problem with deletion using TTL/expiration of larger number of documents

Couchbase Server
20

I have no idea what is wrong. But you can use approach suggested here As you have document keys. Delete bulk documents using Java SDK

As @graham.pople suggested on first reply. Then following N1QL calls use REQUEST_PLUS to reflect the index.

 AsyncBucket queryBucket = bucket.async();
        Observable.from(documentIds)
                .flatMap(id -> queryBucket. remove(id)
                .toBlocking()
                .subscribe();