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  1. Apache Arrow
  2. ARROW-7690

[R] Cannot write parquet to OutputStream

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 0.15.1
    • 0.16.0
    • R

    Description

      The R package does not allow for the ability to write to a FileOutputStream. 

      Minimal testing code:
      library(arrow)
      tf1 <- arrow::FileOutputStream$create(path = "output.parquet")
      arrow::write_parquet(data.frame(x = 1:5), tf1)

      Throws error:

      Error in inherits(sink, OutputStream) : 'what' must be a character vector

       

      The issue appears to be in line 153 of parquet.R

      if (is.character(sink))

      { sink <- FileOutputStream$create(sink) on.exit(sink$close()) }

      else if (!inherits(sink, OutputStream))

      { abort("sink must be a file path or an OutputStream") }

       

      Should be !inherits(sink,'OutputStream')

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              Skowron Bob
              Skowron Bob
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