From 84200be7d26c34ce4ddc4372991bc49d6d36d3d1 Mon Sep 17 00:00:00 2001
From: Kruglov Pavel <48961922+Avogar@users.noreply.github.com>
Date: Mon, 23 Jan 2023 15:31:07 +0100
Subject: [PATCH] Better comment

---
 src/Processors/Formats/Impl/ArrowBufferedStreams.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Processors/Formats/Impl/ArrowBufferedStreams.h b/src/Processors/Formats/Impl/ArrowBufferedStreams.h
index a75f32f41e0..cbabecf9049 100644
--- a/src/Processors/Formats/Impl/ArrowBufferedStreams.h
+++ b/src/Processors/Formats/Impl/ArrowBufferedStreams.h
@@ -63,6 +63,8 @@ public:
     arrow::Result<std::shared_ptr<arrow::Buffer>> Read(int64_t nbytes) override;
 
     /// Override async reading to avoid using internal arrow thread pool.
+    /// In our code we don't use async reading, so implementation is sync,
+    /// we just call ReadAt and return future with rady value.
     arrow::Future<std::shared_ptr<arrow::Buffer>> ReadAsync(const arrow::io::IOContext&, int64_t position, int64_t nbytes) override;
 
     arrow::Status Seek(int64_t position) override;