From 8ba1762618506a456f9ff695365547f0554bd497 Mon Sep 17 00:00:00 2001
From: Leon Sorokin <leeoniya@gmail.com>
Date: Mon, 15 May 2023 15:48:03 -0500
Subject: [PATCH] PanelQueryRunner: Ensure same transformations before reusing
 lastProcessedFrames (#68498)

---
 public/app/features/query/state/PanelQueryRunner.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/public/app/features/query/state/PanelQueryRunner.ts b/public/app/features/query/state/PanelQueryRunner.ts
index 390fa537339..ea3f01d0ded 100644
--- a/public/app/features/query/state/PanelQueryRunner.ts
+++ b/public/app/features/query/state/PanelQueryRunner.ts
@@ -95,6 +95,7 @@ export class PanelQueryRunner {
     let lastFieldConfig: ApplyFieldOverrideOptions | undefined = undefined;
     let lastProcessedFrames: DataFrame[] = [];
     let lastRawFrames: DataFrame[] = [];
+    let lastTransformations: DataTransformerConfig[] | undefined;
     let isFirstPacket = true;
     let lastConfigRev = -1;
 
@@ -110,12 +111,18 @@ export class PanelQueryRunner {
     return this.subject.pipe(
       mergeMap((data: PanelData) => {
         let fieldConfig = this.dataConfigSource.getFieldOverrideOptions();
+        let transformations = this.dataConfigSource.getTransformations();
 
-        if (data.series === lastRawFrames && lastFieldConfig?.fieldConfig === fieldConfig?.fieldConfig) {
+        if (
+          data.series === lastRawFrames &&
+          lastFieldConfig?.fieldConfig === fieldConfig?.fieldConfig &&
+          lastTransformations === transformations
+        ) {
           return of({ ...data, structureRev, series: lastProcessedFrames });
         }
 
         lastFieldConfig = fieldConfig;
+        lastTransformations = transformations;
         lastRawFrames = data.series;
         let dataWithTransforms = of(data);