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support GpuConcat on ArrayType #2379
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Signed-off-by: sperlingxx <lovedreamf@gmail.com>
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Signed-off-by: sperlingxx <lovedreamf@gmail.com>
I found another small problem of cuDF implementation during running tests on Array of String locally. And I've put up a PR to fix it. |
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LGTM
private def stringConcat(batch: ColumnarBatch): GpuColumnVector = { | ||
val rows = batch.numRows() | ||
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withResource(ArrayBuffer[ColumnVector]()) { buffer => |
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nit: here and later: ArrayBuffer.empty[ColumnVector]
for readability.
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Done.
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sql-plugin/src/main/scala/com/nvidia/spark/rapids/collectionOperations.scala
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sql-plugin/src/main/scala/com/nvidia/spark/rapids/collectionOperations.scala
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sql-plugin/src/main/scala/com/nvidia/spark/rapids/collectionOperations.scala
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…erations.scala Co-authored-by: Jason Lowe <jlowe@nvidia.com>
…erations.scala Co-authored-by: Jason Lowe <jlowe@nvidia.com>
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…erations.scala Co-authored-by: Jason Lowe <jlowe@nvidia.com>
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Mostly nits but there are some corner cases that string concat missed and that this also is missing.
I tested the string concat code and it works if we have asserts disabled. If we enable them it fails. I don't know about list concat. There is probably also an issue with no columns being passed in. I am fine with letting this slide for now because you have to go out of your way to disable expression folding for it to be an issue, but it might be good to just fall back to the CPU if there are no children. That way we don't have to ever worry about it.
sql-plugin/src/main/scala/com/nvidia/spark/rapids/collectionOperations.scala
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sql-plugin/src/main/scala/com/nvidia/spark/rapids/collectionOperations.scala
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Signed-off-by: sperlingxx <lovedreamf@gmail.com>
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I added missing support of empty concat. And I also found that cuDF concat can be simply bypassed in single column concat. |
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sql-plugin/src/main/scala/org/apache/spark/sql/rapids/collectionOperations.scala
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Signed-off-by: sperlingxx <lovedreamf@gmail.com>
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Looks good
f.concat(s1, f.col('b')), | ||
f.concat(f.col('a'), s2), | ||
f.concat(f.lit(None).cast('string'), f.col('b')), | ||
f.concat(f.col('a'), f.lit(None).cast('string')), |
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do we have an all nulls test case? I guess this line might hit it if col a can generate nulls.
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similar for arrays, do we want an all nulls test case for arrays
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To be frank, I am not sure whether there exists rows consisting of all null fields among test data for concat_array , with default random seed.
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But I think the all null case may be not that special, since the output row will be null only if one input field is null.
Closes NVIDIA#2013 Support GpuConcat on ArrayType. And introduce some refinement for GpuConcat on StringType. Signed-off-by: sperlingxx <lovedreamf@gmail.com>
Closes NVIDIA#2013 Support GpuConcat on ArrayType. And introduce some refinement for GpuConcat on StringType. Signed-off-by: sperlingxx <lovedreamf@gmail.com>
Closes NVIDIA#2013 Support GpuConcat on ArrayType. And introduce some refinement for GpuConcat on StringType. Signed-off-by: sperlingxx <lovedreamf@gmail.com>
Current PR is to support
GpuConcat
on ArrayType, which is required in issue #2013.In addition, this PR also introduces some refinement on the implementation of string concatenation.