Github user sansanichfb commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/895#discussion_r78457207
--- Diff:
pxf/pxf-hdfs/src/main/java/org/apache/hawq/pxf/plugins/hdfs/utilities/HdfsUtilities.java
---
@@ -236,6 +236,8 @@ public static Schema getAvroSchema(Configuration conf,
String dataSource)
public static String toString(List<OneField> complexRecord, String
delimiter) {
StringBuilder buff = new StringBuilder();
String delim = ""; // first iteration has no delimiter
+ if(complexRecord == null)
+ return null;
--- End diff --
Is it safe to return null? Could be better to return empty string?
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