Volume status shows PID as 0 for few volumes

[PrasadDesala]

Observed behavior

Volume status shows PID as 0 for few volumes.

Expected/desired behavior

Brick process should be running on that brick and volume status should show the PID of the brick process.

Details on how to reproduce (minimal and precise)

1. Create a 3 node GCS setup using vagrant.
2. Create 500 PVCs.
3. Check glustercli volume status

Information about the environment:

• Glusterd2 version used (e.g. v4.1.0 or master): v6.0-dev.114.gitd51f60b
• Operating system used: Centos 7.6
• Glusterd2 compiled from sources, as a package (rpm/deb), or container:
• Using External ETCD: (yes/no, if yes ETCD version): yes
• If container, which container image:
• Using kubernetes, openshift, or direct install:
• If kubernetes/openshift, is gluster running inside kubernetes/openshift or outside: kubernetes

glusterd2 statedump:
statedump_new_2.txt

[PrasadDesala]

one such output,

[root@gluster-kube1-0 /]# glustercli volume status pvc-facc0dcc-1d70-11e9-9b03-5254006fcc4e
Volume : pvc-facc0dcc-1d70-11e9-9b03-5254006fcc4e
+--------------------------------------+-------------------------------+-----------------------------------------------------------------------------------------+--------+-------+-------+
| BRICK ID | HOST | PATH | ONLINE | PORT | PID |
+--------------------------------------+-------------------------------+-----------------------------------------------------------------------------------------+--------+-------+-------+
| cec910f3-850c-449a-9937-d9d14f3253b5 | gluster-kube3-0.glusterd2.gcs | /var/run/glusterd2/bricks/pvc-facc0dcc-1d70-11e9-9b03-5254006fcc4e/subvol1/brick1/brick | true | 33359 | 14717 |
| dc58d3df-7f55-4553-ae55-669a2bcfa7d0 | gluster-kube1-0.glusterd2.gcs | /var/run/glusterd2/bricks/pvc-facc0dcc-1d70-11e9-9b03-5254006fcc4e/subvol1/brick2/brick | false | 0 | 0 |
| 01a9fcdc-8cef-40df-8447-5dad9a55f5bf | gluster-kube2-0.glusterd2.gcs | /var/run/glusterd2/bricks/pvc-facc0dcc-1d70-11e9-9b03-5254006fcc4e/subvol1/brick3/brick | false | 0 | 0 |
+--------------------------------------+-------------------------------+-----------------------------------------------------------------------------------------+--------+-------+-------+