liyafan82 commented on a change in pull request #7100:
URL: https://github.com/apache/arrow/pull/7100#discussion_r420725486



##########
File path: 
java/vector/src/test/java/org/apache/arrow/vector/ITTestLargeVector.java
##########
@@ -131,16 +139,17 @@ private static void testLargeDecimalVector() {
         assertEquals(0, buf.getLong(8));
 
         if ((i + 1) % 10000 == 0) {
-          System.out.println("Successfully read " + (i + 1) + " values");
+          logger.debug("Successfully read {} values", i + 1);
         }
       }
-      System.out.println("Successfully read " + vecLength + " values");
+      logger.info("Successfully read {} values", vecLength);
     }
-    System.out.println("Successfully released the large vector.");
+    logger.info("Successfully released the large vector.");
   }
 
-  private static void testLargeFixedSizeBinaryVector() {
-    System.out.println("Testing large fixed size binary vector.");
+  @Test
+  public void testLargeFixedSizeBinaryVector() {
+    logger.info("Testing large fixed size binary vector.");

Review comment:
       Thanks a lot for your clarification. You mean the class name has a 
prefix "IT", so it will not be run as an ordinary unit test, but will be run as 
an integration test? If so, it is cool!
   
   BTW, the default value of `arrow.vector.max_allocation_bytes` should be 1MB 
by default (pls see 
https://github.com/apache/arrow/blob/master/java/pom.xml#406), so if the 
allocation size exceeds this limit, an exception will be thrown. 
   
   




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