liukun4515 opened a new issue, #2222:
URL: https://github.com/apache/arrow-rs/issues/2222
**Describe the bug**
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latest commit from master, `cargo test` to test all ut.
```
failures:
---- file::serialized_reader::tests::test_peek_page_with_dictionary_page
stdout ----
thread 'file::serialized_reader::tests::test_peek_page_with_dictionary_page'
panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 24, kind:
Uncategorized, message: "Too many open files" }', parquet/src/util/io.rs:84:50
---- file::serialized_reader::tests::test_skip_page_with_offset_index stdout
----
thread 'file::serialized_reader::tests::test_skip_page_with_offset_index'
panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 24, kind:
Uncategorized, message: "Too many open files" }', parquet/src/util/io.rs:84:50
---- arrow::arrow_reader::tests::test_scan_row_with_selection stdout ----
thread 'arrow::arrow_reader::tests::test_scan_row_with_selection' panicked
at 'called `Result::unwrap()` on an `Err` value: Os { code: 24, kind:
Uncategorized, message: "Too many open files" }', parquet/src/util/io.rs:84:50
failures:
arrow::arrow_reader::tests::test_scan_row_with_selection
file::serialized_reader::tests::test_peek_page_with_dictionary_page
file::serialized_reader::tests::test_skip_page_with_offset_index
test result: FAILED. 552 passed; 3 failed; 0 ignored; 0 measured; 0 filtered
out; finished in 9.53s
```
In my mac
ulimit -a
```
-t: cpu time (seconds) unlimited
-f: file size (blocks) unlimited
-d: data seg size (kbytes) unlimited
-s: stack size (kbytes) 8192
-c: core file size (blocks) 0
-v: address space (kbytes) unlimited
-l: locked-in-memory size (kbytes) unlimited
-u: processes 2784
-n: file descriptors 256
```
is there any case that need to open many files?
**To Reproduce**
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**Expected behavior**
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**Additional context**
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