ENDPOINT_NOT_WRITABLE error are seen in SDK while pumping data in KV

Some events could not be published because the queue was (likely temporarily) over capacity: {"ConfigIgnoredEvent":{"sampleEvent":"ConfigIgnoredEvent{severity=VERBOSE, category=com.couchbase.config, duration=PT0S, created=2023-09-21T17:10:38.958Z, description=The proposed configuration (default0) was ignored because of: OLD_OR_SAME_REVISION, context={coreId=0x5dcb8d6800000002}, cause=null}","totalDropCount":2},"RequestRetryScheduledEvent":{"sampleEvent":"RequestRetryScheduledEvent{severity=DEBUG, category=com.couchbase.request, duration=PT0.001S, created=2023-09-21T17:10:39.071Z, description=Request InsertRequest retry scheduled per RetryStrategy (Reason: ENDPOINT_NOT_WRITABLE), context={completed=false, coreId=0x5dcb8d6800000002, idempotent=false, lastDispatchedTo=svc-d-node-002.auhb6tyhsgy0o8an.sandbox.nonprod-project-avengers.com, requestId=15003, requestType=InsertRequest, retried=2, retryReasons=[ENDPOINT_NOT_WRITABLE], service={bucket=default0, collection=VolumeCollection1, documentId=pNUl9EIjmsdk-25406, opaque=0x3ad0, scope=_default, type=kv, vbucket=470}, timeoutMs=60000, timings={encodingMicros=19}}, cause=null}","totalDropCount":9626}}