Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7214#discussion_r33905094
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1580,22 +1580,37 @@ object functions {
//////////////////////////////////////////////////////////////////////////////////////////////
/**
- * Computes the length of a given string value
- *
+ * Computes the length of a given string value.
+ *
--- End diff --
A few benefits:
1. We don't need to depend on commons-util. In general it is good to reduce
external dependency due to dependency conflicts.
2. Our version ideally should work directly against UTF8String, so we don't
need conversion.
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