From f6f7c2d1dee69dfe7f2ca795d37b8f5e8134381f Mon Sep 17 00:00:00 2001
From: Shivindera Singh <shivindera@gmail.com>
Date: Mon, 1 Nov 2021 16:08:08 +0100
Subject: [PATCH] [AppServices] @timestamp as default for timestamp field name
 in index pattern (#25863) (#116126)

---
 .../public/components/form_fields/timestamp_field.tsx      | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/plugins/index_pattern_editor/public/components/form_fields/timestamp_field.tsx b/src/plugins/index_pattern_editor/public/components/form_fields/timestamp_field.tsx
index e034ccd13134..dd9d4f711745 100644
--- a/src/plugins/index_pattern_editor/public/components/form_fields/timestamp_field.tsx
+++ b/src/plugins/index_pattern_editor/public/components/form_fields/timestamp_field.tsx
@@ -105,6 +105,13 @@ export const TimestampField = ({
         const { isInvalid, errorMessage } = getFieldValidityAndErrorMessage(field);
         const isDisabled = !optionsAsComboBoxOptions.length;
 
+        if (!value && !isDisabled) {
+          const val = optionsAsComboBoxOptions.filter((el) => el.value === '@timestamp');
+          if (val.length) {
+            setValue(val[0]);
+          }
+        }
+
         return (
           <>
             <EuiFormRow