loki: query splitting: better stats (#64105)

public/app/plugins/datasource/loki/mocks.ts

@@ -152,7 +152,7 @@ export function getMockFrames() {
     ],
     meta: {
       stats: [
-        { displayName: 'Summary: total bytes processed', value: 11 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 11 },
         { displayName: 'Ingester: total reached', value: 1 },
       ],
     },
@@ -199,7 +199,7 @@ export function getMockFrames() {
     ],
     meta: {
       stats: [
-        { displayName: 'Summary: total bytes processed', value: 22 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 22 },
         { displayName: 'Ingester: total reached', value: 2 },
       ],
     },
@@ -225,7 +225,7 @@ export function getMockFrames() {
     meta: {
       stats: [
         { displayName: 'Ingester: total reached', value: 1 },
-        { displayName: 'Summary: total bytes processed', value: 11 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 11 },
       ],
     },
     length: 2,
@@ -250,7 +250,7 @@ export function getMockFrames() {
     meta: {
       stats: [
         { displayName: 'Ingester: total reached', value: 2 },
-        { displayName: 'Summary: total bytes processed', value: 22 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 22 },
       ],
     },
     length: 2,
@@ -276,7 +276,7 @@ export function getMockFrames() {
     meta: {
       stats: [
         { displayName: 'Ingester: total reached', value: 2 },
-        { displayName: 'Summary: total bytes processed', value: 33 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 33 },
       ],
     },
     length: 2,

public/app/plugins/datasource/loki/queryUtils.test.ts

@@ -369,6 +369,7 @@ describe('combineResponses', () => {
             stats: [
               {
                 displayName: 'Summary: total bytes processed',
+                unit: 'decbytes',
                 value: 33,
               },
             ],
@@ -409,6 +410,7 @@ describe('combineResponses', () => {
             stats: [
               {
                 displayName: 'Summary: total bytes processed',
+                unit: 'decbytes',
                 value: 33,
               },
             ],
@@ -449,6 +451,7 @@ describe('combineResponses', () => {
             stats: [
               {
                 displayName: 'Summary: total bytes processed',
+                unit: 'decbytes',
                 value: 33,
               },
             ],
@@ -488,31 +491,31 @@ describe('combineResponses', () => {
     it('two values', () => {
       const responseA = makeResponse([
         { displayName: 'Ingester: total reached', value: 1 },
-        { displayName: 'Summary: total bytes processed', value: 11 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 11 },
       ]);
       const responseB = makeResponse([
         { displayName: 'Ingester: total reached', value: 2 },
-        { displayName: 'Summary: total bytes processed', value: 22 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 22 },
       ]);
 
       expect(combineResponses(responseA, responseB).data[0].meta.stats).toStrictEqual([
-        { displayName: 'Summary: total bytes processed', value: 33 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 33 },
       ]);
     });
 
     it('one value', () => {
       const responseA = makeResponse([
         { displayName: 'Ingester: total reached', value: 1 },
-        { displayName: 'Summary: total bytes processed', value: 11 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 11 },
       ]);
       const responseB = makeResponse();
 
       expect(combineResponses(responseA, responseB).data[0].meta.stats).toStrictEqual([
-        { displayName: 'Summary: total bytes processed', value: 11 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 11 },
       ]);
 
       expect(combineResponses(responseB, responseA).data[0].meta.stats).toStrictEqual([
-        { displayName: 'Summary: total bytes processed', value: 11 },
+        { displayName: 'Summary: total bytes processed', unit: 'decbytes', value: 11 },
       ]);
     });
 

public/app/plugins/datasource/loki/queryUtils.ts

@@ -365,7 +365,7 @@ function getCombinedMetadataStats(
   const sourceStat = sourceStats.find((s) => s.displayName === TOTAL_BYTES_STAT);
 
   if (sourceStat != null && destStat != null) {
-    return [{ value: sourceStat.value + destStat.value, displayName: TOTAL_BYTES_STAT }];
+    return [{ value: sourceStat.value + destStat.value, displayName: TOTAL_BYTES_STAT, unit: destStat.unit }];
   }
 
   // maybe one of them exist