dbwong commented on a change in pull request #1065:
URL: https://github.com/apache/phoenix/pull/1065#discussion_r552440369



##########
File path: 
phoenix-core/src/main/java/org/apache/phoenix/mapreduce/CsvBulkImportUtil.java
##########
@@ -69,8 +69,11 @@ public static void configurePreUpsertProcessor(Configuration 
conf,
     }
 
     @VisibleForTesting
-    static void setChar(Configuration conf, String confKey, char charValue) {
-        conf.set(confKey, 
Bytes.toString(Base64.getEncoder().encode(Character.toString(charValue).getBytes())));
+
+    static void setChar(Configuration conf, String confKey, Character 
charValue) {
+        if(charValue!=null) {

Review comment:
       Can you explain the reason for the null check?




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