KazydubB commented on a change in pull request #1671: DRILL-7045 UDF 
string_binary java.lang.IndexOutOfBoundsException
URL: https://github.com/apache/drill/pull/1671#discussion_r262869558
 
 

 ##########
 File path: 
exec/java-exec/src/test/java/org/apache/drill/exec/vector/complex/writer/TestJsonNanInf.java
 ##########
 @@ -236,6 +236,22 @@ public void testConvertFromJsonFunction() throws 
Exception {
 
 
 
+  @Test
+  public void testLargeStringBinary() throws Exception {
+    String chunk = "0123456789";
+    String data = "";
+    for (int i = 0; i < 1000; i++) {
+      data += chunk;
 
 Review comment:
   It is preferable to change such string concatenations with 
`StringBuilder#append(String)`. (`String data` --> `StringBuilder data`).

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