From d35461827080fb65d1fe7c6b7fc8600079fd28be Mon Sep 17 00:00:00 2001
From: Yulia Cech <yulia.cech@elastic.co>
Date: Mon, 31 Jan 2022 18:21:21 +0100
Subject: [PATCH] [IM] Added the parameter `features` to the indices list API
 to improve ES performance

---
 x-pack/plugins/index_management/server/lib/fetch_indices.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/x-pack/plugins/index_management/server/lib/fetch_indices.ts b/x-pack/plugins/index_management/server/lib/fetch_indices.ts
index 5050353f992b6..7b25956703db2 100644
--- a/x-pack/plugins/index_management/server/lib/fetch_indices.ts
+++ b/x-pack/plugins/index_management/server/lib/fetch_indices.ts
@@ -30,6 +30,9 @@ async function fetchIndicesCall(
       '*.settings.index.hidden',
       '*.data_stream',
     ],
+    // for better performance only compute aliases and settings of indices but not mappings
+    // @ts-expect-error new param https://github.com/elastic/elasticsearch-specification/issues/1382
+    features: ['aliases', 'settings'],
   });
 
   if (!Object.keys(indices).length) {