This was added in SOLR-2927 - we should be lienant on failures here like we are in other parts of this class.
Bulk close after 5.1 release
Commit 1659118 from Mark Miller in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1659118 ]
SOLR-7101: JmxMonitoredMap can throw an exception in clear when queryNames fails.
Commit 1659116 from Mark Miller in branch 'dev/trunk'
[ https://svn.apache.org/r1659116 ]