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## What changes were proposed in this pull request? `Array[T]()` -> `Array.empty[T]` to avoid allocating 0-length arrays. Use regex `find . -name '*.scala' | xargs -i bash -c 'egrep "Array\[[A-Za-z]+\]\(\)" -n {} && echo {}'` to find modification candidates. cc srowen ## How was this patch tested? existing tests Author: Zheng RuiFeng <ruifengz@foxmail.com> Closes #15564 from zhengruifeng/avoid_0_length_array. |
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