Application Rule Manager gets stuck analyzing the traffic

Products

• VMware NSX Data Center for vSphere

Issue/Introduction

Symptoms:

• ARM sessions gets in a stuck state when analyzing the traffic sessions.
• Unable to stop or start the analysis of any new captured traffic on the NSX manager
• The analysis task does not have a progress bar
• Delete session option is greyed out
• In the NSX Manager vsm.log, The ARM_FLows counter is not changed over time

2021-01-11 03:17:45.191 GMT+00:00  INFO Telemetry Thread - 2 AppVisibilityTelemetryProvider:81 - - [nsxv@6876 comp="nsx-manager" level="INFO" subcomp="manager"] ARM Stats Provider - Count for ARM_Flows : 1250433

Environment

VMware NSX Data Center for vSphere 6.4.x

Resolution

There's no current resolution for this issue

Workaround:
If you have encountered this issue, please open a VMware support request and refer to this KB article.