Sam Albers created ARROW-16612:
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Summary: parquet files with compression extensions should use
parquet writer for compression
Key: ARROW-16612
URL: https://issues.apache.org/jira/browse/ARROW-16612
Project: Apache Arrow
Issue Type: Bug
Components: R
Affects Versions: 8.0.0
Reporter: Sam Albers
Right now arrow will silently write a file with a .gz extension to
CompressedOutputStream rather than passing the compression option to the
parquet writer itself. The internal detect_compression() function detects the
extension and that is what passes it off incorrectly. However it only fails at
the read_parquet stage which could lead to confusion.
{code:java}
library(arrow, warn.conflicts = FALSE)
tf <- tempfile(fileext = ".parquet.gz")
write_parquet(data.frame(x = 1:5), tf, compression = "gzip", compression_level
= 5) read_parquet(tf)
#> Error: file must be a "RandomAccessFile"{code}
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