Karl Dunkle Werner created ARROW-9946:
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Summary: ParquetFileWriter segfaults when `sink` is a string
Key: ARROW-9946
URL: https://issues.apache.org/jira/browse/ARROW-9946
Project: Apache Arrow
Issue Type: Improvement
Components: R
Affects Versions: 1.0.1
Environment: Ubuntu 20.04
Reporter: Karl Dunkle Werner
Hello again! I have another minor R arrow issue.
The {{ParquetFileWriter}} docs say that the {{sink}} argument can be a "string
which is interpreted as a file path". However, when I try to use a string, I
get a segfault because the memory isn't mapped.
Maybe this is a separate request, but it would also be helpful to have
documentation for the methods of the writer created by
{{ParquetFileWriter$create()}}.
Docs link: [https://arrow.apache.org/docs/r/reference/ParquetFileWriter.html]
{code:r}
library(arrow)
sch = schema(a = float32())
writer = ParquetFileWriter$create(schema = sch, sink = "test.parquet")
#> *** caught segfault ***
#> address 0x14100007d, cause 'memory not mapped'
#>
#> Traceback:
#> 1: parquet___arrow___ParquetFileWriter__Open(schema, sink, properties,
arrow_properties)
#> 2: shared_ptr_is_null(xp)
#> 3: shared_ptr(ParquetFileWriter,
parquet___arrow___ParquetFileWriter__Open(schema, sink, properties,
arrow_properties))
#> 4: ParquetFileWriter$create(schema = sch, sink = "test.parquet")
# This works as expected:
sink = FileOutputStream$create("test.parquet")
writer = ParquetFileWriter$create(schema = sch, sink = sink)
{code}
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