Neal Richardson created ARROW-7045:
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Summary: [R] Factor type not preserved in Parquet roundtrip
Key: ARROW-7045
URL: https://issues.apache.org/jira/browse/ARROW-7045
Project: Apache Arrow
Issue Type: Bug
Components: R
Reporter: Neal Richardson
{code:r}
test_that("Factors are preserved when writing/reading from Parquet", {
tf <- tempfile()
on.exit(unlink(tf))
df <- data.frame(a = factor(c("a", "b")))
write_parquet(df, tf)
expect_equivalent(read_parquet(tf), df)
})
{code}
Fails:
{code}
`object` not equivalent to `expected`.
Component “a”: target is character, current is factor
{code}
This has to do with the translation with Parquet and not the R <--> Arrow type
mapping (unlike ARROW-7028). If you write_feather and read_feather, the test
passes.
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