alamb commented on code in PR #4943:
URL: https://github.com/apache/arrow-rs/pull/4943#discussion_r1361151497


##########
parquet/src/arrow/async_reader/mod.rs:
##########
@@ -1677,4 +1682,85 @@ mod tests {
         assert!(sbbf.check(&"Hello"));
         assert!(!sbbf.check(&"Hello_Not_Exists"));
     }
+
+    #[tokio::test]

Review Comment:
   I verified this test fails as follows without the code changes in this PR
   
   ```
   called `Result::unwrap()` on an `Err` value: ArrowError("Parquet argument 
error: Parquet error: StructArrayReader out of sync in read_records, expected 1 
read, got 0")
   thread 'arrow::async_reader::tests::test_nested_skip' panicked at 
parquet/src/arrow/async_reader/mod.rs:1760:29:
   called `Result::unwrap()` on an `Err` value: ArrowError("Parquet argument 
error: Parquet error: StructArrayReader out of sync in read_records, expected 1 
read, got 0")
   stack backtrace:
      0: rust_begin_unwind
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/panicking.rs:595:5
      1: core::panicking::panic_fmt
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/panicking.rs:67:14
      2: core::result::unwrap_failed
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/result.rs:1652:5
      3: core::result::Result<T,E>::unwrap
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/result.rs:1077:23
      4: parquet::arrow::async_reader::tests::test_nested_skip::{{closure}}
                at ./src/arrow/async_reader/mod.rs:1760:26
      5: <core::pin::Pin<P> as core::future::future::Future>::poll
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/future/future.rs:125:9
      6: <core::pin::Pin<P> as core::future::future::Future>::poll
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/future/future.rs:125:9
      7: 
tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::{{closure}}::{{closure}}
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:665:57
      8: tokio::runtime::coop::with_budget
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/coop.rs:107:5
      9: tokio::runtime::coop::budget
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/coop.rs:73:5
     10: 
tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::{{closure}}
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:665:25
     11: tokio::runtime::scheduler::current_thread::Context::enter
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:410:19
     12: 
tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:664:36
     13: 
tokio::runtime::scheduler::current_thread::CoreGuard::enter::{{closure}}
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:743:68
     14: tokio::runtime::context::scoped::Scoped<T>::set
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/context/scoped.rs:40:9
     15: tokio::runtime::context::set_scheduler::{{closure}}
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/context.rs:176:26
     16: std::thread::local::LocalKey<T>::try_with
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/thread/local.rs:270:16
     17: std::thread::local::LocalKey<T>::with
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/thread/local.rs:246:9
     18: tokio::runtime::context::set_scheduler
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/context.rs:176:9
     19: tokio::runtime::scheduler::current_thread::CoreGuard::enter
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:743:27
     20: tokio::runtime::scheduler::current_thread::CoreGuard::block_on
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:652:19
     21: 
tokio::runtime::scheduler::current_thread::CurrentThread::block_on::{{closure}}
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:175:28
     22: tokio::runtime::context::runtime::enter_runtime
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/context/runtime.rs:65:16
     23: tokio::runtime::scheduler::current_thread::CurrentThread::block_on
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/scheduler/current_thread/mod.rs:167:9
     24: tokio::runtime::runtime::Runtime::block_on
                at 
/Users/alamb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.32.0/src/runtime/runtime.rs:347:47
     25: parquet::arrow::async_reader::tests::test_nested_skip
                at ./src/arrow/async_reader/mod.rs:1744:9
     26: parquet::arrow::async_reader::tests::test_nested_skip::{{closure}}
                at ./src/arrow/async_reader/mod.rs:1687:33
     27: core::ops::function::FnOnce::call_once
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/ops/function.rs:250:5
     28: core::ops::function::FnOnce::call_once
                at 
/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/ops/function.rs:250:5
   note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose 
backtrace.
   
   
   ```



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