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Author: KodaiD

core/src/main/java/com/scalar/db/common/CommonDistributedStorageAdmin.java

@@ -391,7 +391,7 @@ public void alterColumnType(
     if (currentColumnType == newColumnType) {
       return;
     }
-    if (!isTypeConversionSupported(currentColumnType, newColumnType)) {
+    if (!isTypeConversionValid(currentColumnType, newColumnType)) {
       throw new IllegalArgumentException(
           CoreError.INVALID_COLUMN_TYPE_CONVERSION.buildMessage(
               currentColumnType, newColumnType, columnName));
@@ -531,7 +531,7 @@ public void close() {
     admin.close();
   }
 
-  private boolean isTypeConversionSupported(DataType from, DataType to) {
+  private boolean isTypeConversionValid(DataType from, DataType to) {
     if (from == to) {
       return true;
     }