Host based reports with 1 min rollup resolution contain only the "Others" entry in the Summary Table

After updating software to 10.8.x, host based ( host/host pair/hostgroup,etc) reports with 1 min rollup resolution contain only the "Others" row in the Summary Table. Individual hosts/hostgroups/hostpairs are not reported.

1 min rollups are built by analyzer process unlike the other rollups which are built by rollup process. Prior to building any rollup, a list of top hosts and host pairs is generated. These lists are respectively called valid host list and valid host pair list. The list is then used to create the rollup data. The hosts/hostpairs that do not appear in the valid list are summed up in the wild card bucket known as "Others". It was observed that the valid lists were not being built and hence all the hosts/hostpairs were falling into the "Others" bucket.

To confirm if your unit is experiencing the same issue, check the analyzer.log for these messages:

Jun 16 05:26:59 (8264) (3786) [info] [query] BuildValidHostPairs: mapped 0 pairs, dropped=0 (top_pair_limit=80000, top_virtual_pair_limit=0, invalid_host=0, invalid_virtual_host=0, not_top_pair=0)
Jun 16 05:26:59 (8264) (3786) [info] [rollup] BuildValidHostPairs_ToRollup: read 0 pkts => 0 records (0 processed) => 0 pkts out
Jun 16 05:26:59 (8264) (3786) [info] [query] BuildValidHost: mapped 0 hosts, dropped=0 (top_hosts_limit=40000, top_virtual_hosts_limit=0, ghost=0, not_top_hosts=0, not_top_external=0)
Jun 16 05:26:59 (8264) (3786) [info] [rollup] BuildValidHosts_ToRollup: read 0 pkts => 0 records (0 processed) => 0 pkts out
Jun 16 05:27:57 (8264) (4563) [info] [rollup] AutoTimer: after BuildValidHosts_ToRollup::torollup0::free_rollups: freeing 0 records, took 0.00 seconds (user 0.00, sys 0.00, cuser 0.00, csys 0.00 => 0.00% CPU)
Jun 16 05:27:57 (8264) (4563) [info] [rollup] AutoTimer: after BuildValidHostPairs_ToRollup::torollup1::free_rollups: freeing 0 records, took 0.00 seconds (user 0.00, sys 0.00, cuser 0.00, csys 0.00 => 0.00% CPU)
Jun 16 05:28:00 (8264) (4561) [info] [query] BuildValidHostPairs: mapped 0 pairs, dropped=0 (top_pair_limit=80000, top_virtual_pair_limit=0, invalid_host=0, invalid_virtual_host=0, not_top_pair=0)
Jun 16 05:28:00 (8264) (4561) [info] [rollup] BuildValidHostPairs_ToRollup: read 0 pkts => 0 records (0 processed) => 0 pkts out
Jun 16 05:28:00 (8264) (4561) [info] [query] BuildValidHost: mapped 0 hosts, dropped=0 (top_hosts_limit=40000, top_virtual_hosts_limit=0, ghost=0, not_top_hosts=0, not_top_external=0)
Jun 16 05:28:00 (8264) (4561) [info] [rollup] BuildValidHosts_ToRollup: read 0 pkts => 0 records (0 processed) => 0 pkts out

Engineering has released patch for 10.8.2 and 10.8.5 versions. Both the patches are attached below.

Steps to apply the patch:

1. Download the appropriate version of the patch on the NetProfiler ( emhost unit in case of an Enterprise Profiler)

2. Stop the services on all the units.
   
   [mazu@uklab-enterprise-profiler1 ~]$ sudo mazuctl stopall

3. Install the patch (The following steps were performed on a v10.8.2 system)

   [mazu@uklab-enterprise-profiler1 ~]$ chmod +x rbt_cascade_analyzer_1min_rollup_v10.8.2.bin
[mazu@uklab-enterprise-profiler1 ~]$ ./rbt_cascade_analyzer_1min_rollup_v10.8.2.bin
Completed OK.


4. Start the services.
   
   [mazu@uklab-enterprise-profiler1 ~]$ sudo mazuctl startall