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jlli pushed a commit to branch fix-preprocessing-operations
in repository https://gitbox.apache.org/repos/asf/incubator-pinot.git

commit a4e804e37b23b569d30981f59902e4bf3c73dab7
Author: Jack Li(Analytics Engineering) <[email protected]>
AuthorDate: Thu Jul 1 17:12:39 2021 -0700

    Validate the length of preprocessing operation from custom config
---
 .../pinot/hadoop/utils/preprocess/DataPreprocessingUtils.java       | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git 
a/pinot-plugins/pinot-batch-ingestion/v0_deprecated/pinot-hadoop/src/main/java/org/apache/pinot/hadoop/utils/preprocess/DataPreprocessingUtils.java
 
b/pinot-plugins/pinot-batch-ingestion/v0_deprecated/pinot-hadoop/src/main/java/org/apache/pinot/hadoop/utils/preprocess/DataPreprocessingUtils.java
index bf399af..4453440 100644
--- 
a/pinot-plugins/pinot-batch-ingestion/v0_deprecated/pinot-hadoop/src/main/java/org/apache/pinot/hadoop/utils/preprocess/DataPreprocessingUtils.java
+++ 
b/pinot-plugins/pinot-batch-ingestion/v0_deprecated/pinot-hadoop/src/main/java/org/apache/pinot/hadoop/utils/preprocess/DataPreprocessingUtils.java
@@ -75,12 +75,14 @@ public class DataPreprocessingUtils {
     }
   }
 
-  public static Set<Operation> getOperations(Set<Operation> operationSet, 
String preprocessingOperationsString) {
+  public static void getOperations(Set<Operation> operationSet, String 
preprocessingOperationsString) {
+    if (preprocessingOperationsString.trim().isEmpty()) {
+      return;
+    }
     String[] preprocessingOpsArray = preprocessingOperationsString.split(",");
     for (String preprocessingOps : preprocessingOpsArray) {
       
operationSet.add(Operation.getOperation(preprocessingOps.trim().toUpperCase()));
     }
-    return operationSet;
   }
 
   public enum Operation {

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