dongjoon-hyun commented on a change in pull request #934:
URL: https://github.com/apache/orc/pull/934#discussion_r728662942



##########
File path: c++/src/Reader.cc
##########
@@ -35,6 +35,12 @@
 #include <set>
 
 namespace orc {
+  // ORC files writen by these versions of cpp writers have inconsistent bloom 
filter
+  // hashing with the Java codes (ORC-1024). Bloom filters of them should not 
be used
+  // after we fix ORC-1024.

Review comment:
       @stiga-huang . It seems that you are confused. I didn't say to remove 
comments. I asked you to remove JIRA ID.
   > I can remove this if you prefer not having this comment.
   
   If you want to be clear, you had better mention ORC version numbers 
explicitly.
   
   For coding style, I believe we both agree that the best coding style is 
having clear and clean code and self-describing comments. Adding JIRA IDs means 
redirecting to something-else due to the lack of clarity. I don't think this 
code part has that kind complexity.
   
   In addition, if you are adding JIRA IDs at every code blocks, we are going 
to end up having JIRA IDs for all lines. Moreover, in the worst case, next 
contributors are going to add another JIRA IDs for the same code blocks on top 
of the existing JIRA IDs.
   
   WDTY?




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