jorisvandenbossche commented on a change in pull request #9949:
URL: https://github.com/apache/arrow/pull/9949#discussion_r611828323
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File path: cpp/src/arrow/io/hdfs.cc
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@@ -497,12 +501,15 @@ class HadoopFileSystem::HadoopFileSystemImpl {
Status OpenReadable(const std::string& path, int32_t buffer_size,
const io::IOContext& io_context,
std::shared_ptr<HdfsReadableFile>* file) {
+ errno = 0;
hdfsFile handle = driver_->OpenFile(fs_, path.c_str(), O_RDONLY,
buffer_size, 0, 0);
if (handle == nullptr) {
- const char* msg = !Exists(path) ? "HDFS file does not exist: "
- : "HDFS path exists, but opening file
failed: ";
- return Status::IOError(msg, path);
+ if (errno) {
Review comment:
Dummy question, since the `errno` variable is never passed to a libhdfs
method, how can this ever have another value than 0?
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