saxenapranav commented on PR #6699:
URL: https://github.com/apache/hadoop/pull/6699#issuecomment-2145041377

   > @saxenapranav can you wait until there's a version of #6789 which adds 
something to hadoop common to build an enumset from a comma separated list of 
options? this will allow for easy extension -just add a new enum and a probe, 
and be consistent.
   > 
   > I'll export it in a static method in a new class in org.apache.hadoop.util 
and call from Configuration, so it'll be easy for you to pick up too.
   > 
   > Ideally we should try for common Enum names too: I'll let you start there 
and copy them in my work
   
   Hi @steveloughran , thanks for the suggestion! If I understand correctly, 
what we want to do is that we have a common config (from flag enum), that can 
tell filesystem about the head optimization. Sounds really good.
   
   This PR is really important as it reduces a redundant network call in 
AbfsInputStream's lifecycle.
   
   The referred PR I believe is in draft mode, requesting you to kindly advise 
if we should move ahead with this PR and then adapt the flags as a later PR, or 
if we wait for the referred PR. 
   
   Thanks. 


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