ndb - bug#28720 - "Disk data meta information is not visible in mysqld but exists in ndbd"

  continue on unknown result (no contact)

sql/ha_ndbcluster.cc

@@ -10974,6 +10974,10 @@ static int ndbcluster_fill_files_table(handlerton *hton,
       {
         if (ndberr.classification == NdbError::SchemaError)
           continue;
+
+        if (ndberr.classification == NdbError::UnknownResultError)
+          continue;
+
         ERR_RETURN(ndberr);
       }
       NdbDictionary::Tablespace ts= dict->getTablespace(df.getTablespace());