Few document replication not happen in solr cloud

[Sanjay Lokhande]

Hi guys,
            I having 5 node solr cloud setup.  The logs indicates leader
and 2 solr node receiving document add request.  The other 2 nodes logs did
not show the entry to add the document and also these nodes missing the
document.
              - how such issue can be troubleshoot? any pointers?
             - any logging level which can help is this situation?

Regards,
Sanjay