NSX-T Firewall Rules Metrics are missing on Aria Operations for Networks GUI

Products

• VMware Aria Operations for Networks

Issue/Introduction

Collector latest.log shows below exception while processing the security policies.

java.lang.IllegalArgumentException: Comparison method violates its general contract_
        at java.util.TimSort.mergeHi(TimSort.java:903) _[_:_]
        at java.util.TimSort.mergeAt(TimSort.java:520) _[_:_]
        at java.util.TimSort.mergeForceCollapse(TimSort.java:461) _[_:_]
        at java.util.TimSort.sort(TimSort.java:254) _[_:_]
        at java.util.Arrays.sort(Arrays.java:1515) _[_:_]
        at java.util.ArrayList.sort(ArrayList.java:1750) _[_:_]
        at com.vnera.dataproviders.core.impl.vmware.policymanager.tasks.datafetchers.PolicyManagerFirewallPolicyRulesFetcher.getFirewallPolicies

Environment

• Aria Operations for Networks 6.10.0
• Aria Operations for Networks 6.11.0
• Aria Operations for Networks 6.12.0
• Aria Operations for Networks 6.12.1
• Aria Operations for Networks 6.13.0
• Aria Operations for Networks 6.14.0

Cause

• Aria Operations for Networks fetches the security polices from all domains then do the sorting based on category and sequence number.
• Aria Operations for Networks fetches the firewall rules from each of the sorted security polices.
• Due to IllegalArgumentException seen in the collector logs the firewall rules intermittently deleting hence data is seen missing in GUI.

Resolution

• This issue is resolved in VMware NSX 4.2.0, available at Broadcom downloads.
  • If you are having difficulty finding and downloading software, review the Download Broadcom products and software KB.
• A workaround is available for this in Aria Operations for Networks which involves database modification.
  • Open a Broadcom support case. For more information, see Creating and managing Broadcom support cases.