Claymore Marshall created ARROW-11579:
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Summary: R's arrow::read_feather hanging on repeat reads of large
objects
Key: ARROW-11579
URL: https://issues.apache.org/jira/browse/ARROW-11579
Project: Apache Arrow
Issue Type: Bug
Components: R
Affects Versions: 3.0.0
Environment: windows 10, R 4.0.0, arrow 3.0.0
Reporter: Claymore Marshall
On windows 10, reading large feather objects in R seems to lead to hanging on a
repeat read.
This issue has been reproduced on 3 different windows machines. All running
win 10, R 4.0.0 (or later).
read_feather does not hang if using version = 1, or using uncompressed with
version 2.
This issue does not happen on tests on linux (Ubuntu 20.04 atleast)
Example:
library(arrow)
m <- data.frame(x = rnorm(7e6), y = rnorm(5), b = rnorm(5), n = rnorm(5), c =
c("a", "n"))
write_feather(m, "test.feather4", version = 2, compression = "lz4") # does not
hang with uncompressed, but does with lz4 and zstd
for (j in 1:50) {
y <- read_feather("test.feather4") # hangs after an unpredictable number of
reads, just on windows though
print(paste0("feather read ", j, "..."))
}
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