Verify and enforce JVM locale

trinodb · Mar 25, 2024 · 6026f35 · 6026f35
1 parent a0dd9e3
commit 6026f35
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/core/trino-main/src/main/java/io/trino/server/TrinoSystemRequirements.java b/core/trino-main/src/main/java/io/trino/server/TrinoSystemRequirements.java
@@ -39,6 +39,7 @@ final class TrinoSystemRequirements
 {
     private static final int MIN_FILE_DESCRIPTORS = 4096;
     private static final int RECOMMENDED_FILE_DESCRIPTORS = 8192;
+    private static final Locale EN_US = Locale.of("en", "US");
 
     private TrinoSystemRequirements() {}
 
@@ -52,6 +53,7 @@ public static void verifyJvmRequirements()
         verifyFileDescriptor();
         verifySlice();
         verifyUtf8();
+        verifyLocale();
     }
 
     private static void verify64BitJvm()
@@ -162,6 +164,14 @@ private static void verifyUtf8()
         }
     }
 
+    private static void verifyLocale()
+    {
+        Locale defaultLocale = Locale.getDefault();
+        if (!defaultLocale.equals(EN_US)) {
+            failRequirement("Trino requires that the default locale is ENGLISH (found %s). This can be set with the JVM command line option -Duser.language=en -Duser.region=US", defaultLocale);
+        }
+    }
+
     /**
      * Perform a sanity check to make sure that the year is reasonably current, to guard against
      * issues in third party libraries.