Set initial capacity of Function.FUNCTIONS and DateTimeFunctions.DATE_PART

h2/src/main/org/h2/expression/Function.java

@@ -146,7 +146,7 @@ public class Function extends Expression implements FunctionCall {
     private static final int VAR_ARGS = -1;
     private static final long PRECISION_UNKNOWN = -1;
 
-    private static final HashMap<String, FunctionInfo> FUNCTIONS = new HashMap<>();
+    private static final HashMap<String, FunctionInfo> FUNCTIONS = new HashMap<>(256);
     private static final char[] SOUNDEX_INDEX = new char[128];
 
     protected Expression[] args;

h2/src/main/org/h2/util/DateTimeFunctions.java

@@ -49,7 +49,7 @@ import org.h2.value.ValueTimestampTimeZone;
  * Date and time functions.
  */
 public final class DateTimeFunctions {
-    private static final HashMap<String, Integer> DATE_PART = new HashMap<>();
+    private static final HashMap<String, Integer> DATE_PART = new HashMap<>(128);
 
     /**
      * English names of months and week days.