From 4da711fbd53a647b5b709698271a0150fd0dfe85 Mon Sep 17 00:00:00 2001
From: John Verwolf <osjdverwolf@gmail.com>
Date: Tue, 5 Sep 2023 10:02:30 -0700
Subject: [PATCH] Disable concurrency for MoreExpressionIT

---
 .../script/expression/MoreExpressionIT.java            | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/modules/lang-expression/src/internalClusterTest/java/org/elasticsearch/script/expression/MoreExpressionIT.java b/modules/lang-expression/src/internalClusterTest/java/org/elasticsearch/script/expression/MoreExpressionIT.java
index e7d6d127174ec..3e12f8ccd565b 100644
--- a/modules/lang-expression/src/internalClusterTest/java/org/elasticsearch/script/expression/MoreExpressionIT.java
+++ b/modules/lang-expression/src/internalClusterTest/java/org/elasticsearch/script/expression/MoreExpressionIT.java
@@ -456,6 +456,16 @@ public void testInvalidFieldMember() {
         }
     }
 
+    /**
+     * We have seen `testSpecialValueVariable()` fail in CI due to concurrency issues.
+     * We will disable concurrency here so that this doesn't cause flakey CI, then follow up with a subsequent fix.
+     * Ref: <a href="https://github.com/elastic/elasticsearch/issues/99156">Test failure issue</a>
+     */
+    @Override
+    protected boolean enableConcurrentSearch() {
+        return false;
+    }
+
     public void testSpecialValueVariable() throws Exception {
         // i.e. _value for aggregations
         createIndex("test");