taiyang-li commented on code in PR #2048:
URL: https://github.com/apache/orc/pull/2048#discussion_r1843128495
##########
c++/include/orc/OrcFile.hh:
##########
@@ -58,6 +73,17 @@ namespace orc {
*/
virtual void read(void* buf, uint64_t length, uint64_t offset) = 0;
+ /**
+ * Read data asynchronously.
+ * @param offset the position in the stream to read from.
+ * @param length the number of bytes to read.
+ * @return a future that will be set to the buffer when the read is
complete.
+ */
+ virtual std::future<BufferPtr> readAsync(uint64_t /*offset*/, uint64_t
/*length*/,
Review Comment:
There is an extra advantage if we use the old interface: we could easily
know `readAsync` is success or not by `BufferPtr != nullptr`
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