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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/10/16 08:38:43 UTC

[GitHub] [spark] rongma1997 opened a new pull request #26137: [SPARK-29490][SQL]Reset 'WritableColumnVector' in 'RowToColumnarExec'

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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