yashmayya commented on code in PR #15069:
URL: https://github.com/apache/pinot/pull/15069#discussion_r1957084417


##########
pinot-core/src/main/java/org/apache/pinot/core/accounting/PerQueryCPUMemAccountantFactory.java:
##########
@@ -278,8 +278,9 @@ public void updateQueryUsageConcurrently(String queryId) {
      */
     @SuppressWarnings("ConstantConditions")
     public void sampleThreadCPUTime() {
-      if (_isThreadCPUSamplingEnabled) {
-        _threadLocalEntry.get()._currentThreadCPUTimeSampleMS = 
getThreadResourceUsageProvider().getThreadTimeNs();
+      ThreadResourceUsageProvider provider = getThreadResourceUsageProvider();
+      if (_isThreadCPUSamplingEnabled && provider != null) {
+        _threadLocalEntry.get()._currentThreadCPUTimeSampleMS = 
provider.getThreadTimeNs();

Review Comment:
   Should we add a log if `ThreadResourceUsageProvider` is unexpectedly `null` 
to help discover execution paths that haven't been instrumented?



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