fix test case fail in LogFormatterTestCase

better define locale to us avoiding some special locale such as china/france which called sep to 9月/sept
the test case will fail in enviroment using zh_CN.UTF-8
org.junit.ComparisonFailure: expected:<test20030825133035[Aug]> but was:<test20030825133035[8月]>

1 files changed, 4 insertions, 4 deletions

diff --git a/container-accesslogging/src/main/java/com/yahoo/container/logging/LogFormatter.java b/container-accesslogging/src/main/java/com/yahoo/container/logging/LogFormatter.java
index adb4583d405..87d846ad18c 100644
--- a/container-accesslogging/src/main/java/com/yahoo/container/logging/LogFormatter.java
+++ b/container-accesslogging/src/main/java/com/yahoo/container/logging/LogFormatter.java
@@ -22,13 +22,13 @@ public class LogFormatter extends Formatter {
     static SimpleDateFormat yyyyMMdd;
 
     static {
-        ddMMMyyyy = new SimpleDateFormat("[dd/MMM/yyyy:HH:mm:ss Z]");
+        ddMMMyyyy = new SimpleDateFormat("[dd/MMM/yyyy:HH:mm:ss Z]", Locale.US);
         ddMMMyyyy.setTimeZone(TimeZone.getTimeZone("UTC"));
 
-        dfMMM = new SimpleDateFormat("MMM");
+        dfMMM = new SimpleDateFormat("MMM", Locale.US);
         dfMMM.setTimeZone(TimeZone.getTimeZone("UTC"));
 
-        yyyyMMdd = new SimpleDateFormat("[yyyy-MM-dd HH:mm:ss]");
+        yyyyMMdd = new SimpleDateFormat("[yyyy-MM-dd HH:mm:ss]", Locale.US);
         yyyyMMdd.setTimeZone(TimeZone.getTimeZone("UTC"));
     }
 
@@ -102,7 +102,7 @@ public class LogFormatter extends Formatter {
      * </ul>
      */
     public static String insertDate(String pattern, long time) {
-        DateFormat df = new SimpleDateFormat("yyyy.MM.dd:HH:mm:ss.SSS Z");
+        DateFormat df = new SimpleDateFormat("yyyy.MM.dd:HH:mm:ss.SSS Z", Locale.US);
         df.setTimeZone(TimeZone.getTimeZone("UTC"));
         Date date = new Date(time);
         String datetime = df.format(date);