From b5e4a0a39aafddb9c2d9dfa15556cbea8bd99d16 Mon Sep 17 00:00:00 2001
From: Giordano Ricci <me@giordanoricci.com>
Date: Fri, 27 Aug 2021 17:19:44 +0100
Subject: [PATCH] Elasticsearch: Only show numbers in histogram field
 autocomplete (#38631)

---
 .../datasource/elasticsearch/hooks/useFields.test.tsx        | 5 +++++
 .../app/plugins/datasource/elasticsearch/hooks/useFields.ts  | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/public/app/plugins/datasource/elasticsearch/hooks/useFields.test.tsx b/public/app/plugins/datasource/elasticsearch/hooks/useFields.test.tsx
index 5f12d0afc81..0af4be1bb55 100644
--- a/public/app/plugins/datasource/elasticsearch/hooks/useFields.test.tsx
+++ b/public/app/plugins/datasource/elasticsearch/hooks/useFields.test.tsx
@@ -60,6 +60,11 @@ describe('useFields hook', () => {
     result.current();
     expect(getFields).toHaveBeenLastCalledWith(['date'], timeRange);
 
+    // Histrogram only works on numbers
+    rerender('histogram');
+    result.current();
+    expect(getFields).toHaveBeenLastCalledWith(['number'], timeRange);
+
     // Geohash Grid only works on geo_point data
     rerender('geohash_grid');
     result.current();
diff --git a/public/app/plugins/datasource/elasticsearch/hooks/useFields.ts b/public/app/plugins/datasource/elasticsearch/hooks/useFields.ts
index 54cfb3b5cc4..780b3c89fad 100644
--- a/public/app/plugins/datasource/elasticsearch/hooks/useFields.ts
+++ b/public/app/plugins/datasource/elasticsearch/hooks/useFields.ts
@@ -34,6 +34,8 @@ const getFilter = (type: AggregationType) => {
         return ['date'];
       case 'geohash_grid':
         return ['geo_point'];
+      case 'histogram':
+        return ['number'];
       default:
         return [];
     }