Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7509#discussion_r34961032
--- Diff:
unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java ---
@@ -49,6 +49,8 @@
5, 5, 5, 5,
6, 6, 6, 6};
+ public static UTF8String EMPTY_STRING = new UTF8String(new byte[0],
BYTE_ARRAY_OFFSET, 0);
--- End diff --
might be more clear to call this EMPTY_UTF8 to avoid confusion with java
String.
Also can you use the fromString constructor? Performance won't matter too
much here since it is a static one.
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