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## What changes were proposed in this pull request? UTF8String.trim() allocates a new object even if the string has no whitespace, when it can just return itself. A simple check for this case makes the method about 3x faster in the common case. ## How was this patch tested? Existing tests. A rough benchmark of 90% strings without whitespace (at ends), and 10% that do have whitespace, suggests the average runtime goes from 20 ns to 6 ns. Closes #24884 from srowen/SPARK-28066. Authored-by: Sean Owen <sean.owen@databricks.com> Signed-off-by: Dongjoon Hyun <dhyun@apple.com> |
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| sketch | ||
| tags | ||
| unsafe | ||