From a0a94b28590b462590c21a8f864672592727a5b9 Mon Sep 17 00:00:00 2001
From: "opensearch-trigger-bot[bot]"
 <98922864+opensearch-trigger-bot[bot]@users.noreply.github.com>
Date: Thu, 21 Dec 2023 13:24:24 -0800
Subject: [PATCH] [OSCI][FIX] Discover: Fix the Subfields Display Issue (#5429)
 (#5477)

* set flattenHit() deep param as true to allow iterate on nested object

Signed-off-by: Qiwen Li <qiwen_li@brown.edu>

---------

Signed-off-by: qiwen li <qiwen_li@brown.edu>
Signed-off-by: Qiwen Li <qiwen_li@brown.edu>
Signed-off-by: Miki <miki@amazon.com>
Signed-off-by: Anan Zhuang <ananzh@amazon.com>
Co-authored-by: Miki <miki@amazon.com>
Co-authored-by: Anan Zhuang <ananzh@amazon.com>
(cherry picked from commit 40ba1f51602e82e6a9539431e339706c7b564b83)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

# Conflicts:
#	CHANGELOG.md

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Miki <miki@amazon.com>
---
 .../data/common/index_patterns/index_patterns/flatten_hit.ts    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/data/common/index_patterns/index_patterns/flatten_hit.ts b/src/plugins/data/common/index_patterns/index_patterns/flatten_hit.ts
index 63dc3eb453dd..73ace5e41a05 100644
--- a/src/plugins/data/common/index_patterns/index_patterns/flatten_hit.ts
+++ b/src/plugins/data/common/index_patterns/index_patterns/flatten_hit.ts
@@ -112,7 +112,7 @@ export function flattenHitWrapper(
   metaFields = {},
   cache = new WeakMap()
 ) {
-  return function cachedFlatten(hit: Record<string, any>, deep = false) {
+  return function cachedFlatten(hit: Record<string, any>, deep = true) {
     const decorateFlattened = decorateFlattenedWrapper(hit, metaFields);
     const cached = cache.get(hit);
     const flattened = cached || flattenHit(indexPattern, hit, deep);