rongma1997 opened a new pull request #26137: [SPARK-29490][SQL]Reset 'WritableColumnVector' in 'RowToColumnarExec' URL: https://github.com/apache/spark/pull/26137 ### What changes were proposed in this pull request? Reset the `WritableColumnVector` when getting "next" ColumnarBatch in `RowToColumnarExec` ### Why are the changes needed? When converting `Iterator[InternalRow]` to `Iterator[ColumnarBatch]`, the vectors used to create a new `ColumnarBatch` should be reset in the iterator's "next()" method. ### Does this PR introduce any user-facing change? No ### How was this patch tested? N/A
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