coderex2522 commented on code in PR #1158:
URL: https://github.com/apache/orc/pull/1158#discussion_r905759781


##########
c++/include/orc/Reader.hh:
##########
@@ -32,13 +32,34 @@
 #include <set>
 #include <string>
 #include <vector>
+#include <atomic>
 
 namespace orc {
 
   // classes that hold data members so we can maintain binary compatibility
   struct ReaderOptionsPrivate;
   struct RowReaderOptionsPrivate;
 
+  /**
+   * Expose the reader metrics including the latency and
+   * number of calls of the decompression/decoding/IO modules.

Review Comment:
   Done. I added some comments to the metrics latency fields.



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