From 837d3ab39877f299453077bb508c6c2b746be99f Mon Sep 17 00:00:00 2001
From: Peng Huo <penghuo@gmail.com>
Date: Mon, 10 Jul 2023 14:57:50 -0700
Subject: [PATCH] fix flakytest when tests.locale=tr

Signed-off-by: Peng Huo <penghuo@gmail.com>
---
 .../java/org/opensearch/sql/protocol/response/QueryResult.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/protocol/src/main/java/org/opensearch/sql/protocol/response/QueryResult.java b/protocol/src/main/java/org/opensearch/sql/protocol/response/QueryResult.java
index ae66364419..3ce1dd8875 100644
--- a/protocol/src/main/java/org/opensearch/sql/protocol/response/QueryResult.java
+++ b/protocol/src/main/java/org/opensearch/sql/protocol/response/QueryResult.java
@@ -9,6 +9,7 @@
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
+import java.util.Locale;
 import java.util.Map;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
@@ -58,7 +59,7 @@ public Map<String, String> columnNameTypes() {
     Map<String, String> colNameTypes = new LinkedHashMap<>();
     schema.getColumns().forEach(column -> colNameTypes.put(
         getColumnName(column),
-        column.getExprType().typeName().toLowerCase()));
+        column.getExprType().typeName().toLowerCase(Locale.ROOT)));
     return colNameTypes;
   }