steveloughran commented on pull request #2297:
URL: https://github.com/apache/hadoop/pull/2297#issuecomment-700859880


   Having checked up on those dependencies myself, yes, we are already shipping 
snappy-java 1.0.5 as a dependency of hadoop-common, by way of avro. Which makes 
a strong case for keeping the snappy codec in hadoop-common, declaring the 
snappy dependency as a compile time dependency, with the version we choose. 
This ensures hbase &c pick it up, and, because it is there: we aren't creating 
any more complications for people downstream than they get today.
   
   @saintstack happy with that?
   
   In which case, we actually go to the earlier patches, which just switch the 
codec to using the native one, and the pom changes to import it. Plus a release 
note 'you don't need native snappy no more'.
   
   We could stay with the current code, which is resilient to someone removing 
the JAR. 
   Good: resilient
   bad: doesn't work so well if things (hadoop-client?) shade the snappy jar 
references. 
   
   I don't know what to do there. Given the code is written, I'd go for "merge 
it as is and see what happens", but the "go back to the minimal binding" could 
well have lower maintenance costs down the line


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