wangyum commented on code in PR #9156:
URL: https://github.com/apache/incubator-gluten/pull/9156#discussion_r2017986752
##########
cpp/core/shuffle/LocalPartitionWriter.cc:
##########
@@ -387,7 +387,9 @@ std::string LocalPartitionWriter::nextSpilledFileDir() {
arrow::Result<std::shared_ptr<arrow::io::OutputStream>>
LocalPartitionWriter::openFile(const std::string& file) {
std::shared_ptr<arrow::io::FileOutputStream> fout;
- ARROW_ASSIGN_OR_RAISE(fout, arrow::io::FileOutputStream::Open(file));
+ auto fd = open(file.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR
| S_IRGRP | S_IROTH);
Review Comment:
Change it to:
```c++
auto fd = open(file.c_str(), O_WRONLY | O_CREAT | O_TRUNC);
// Set the shuffle file permissions to 0644 to keep it consistent with the
permissions of the built-in shuffler manager in Spark.
fchmod(fd, 0644);
```
I also tried another way to write it, but it didn't work.
```c++
#include <stdio.h>
#include <fcntl.h>
#include <sys/stat.h>
int main () {
auto fd = open("test-gluten-9148", O_WRONLY | O_CREAT | O_TRUNC, 0644);
return 0;
}
```
```
g++ test.cc && ./a.out && ls -l test-gluten-9148
```
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