CDCR Queues API invocation with CloudSolrclient

[Natarajan, Rajeswari]

Hi,

With the below API , the QueryResponse , sometimes have the "lastTimestamp" , 
sometimes not.
protected static QueryResponse getCdcrQueue(CloudSolrClient client) throws 
SolrServerException, IOException {
    ModifiableSolrParams params = new ModifiableSolrParams();
    params.set(CommonParams.QT, "/cdcr");
    params.set(CommonParams.ACTION, CdcrParams.QUEUES);
    return client.query(params);
  }

Invoking http://<hostname>:<port>/solr/<collectionName>/cdcr?action=QUEUES  has 
the same issue

But if invoked as http://<hostname>:<port>/solr/<coreName>/cdcr?action=QUEUES 
always gets the " lastTimestamp" value. Would like to know
How to get the cdcr queues always return " lastTimestamp" value reliabily by 
CloudSolrClient.

Thank you,
Rajeswari