aratno commented on code in PR #4118:
URL: https://github.com/apache/cassandra/pull/4118#discussion_r2078543255


##########
src/java/org/apache/cassandra/io/sstable/metadata/MetadataSerializer.java:
##########
@@ -123,17 +124,10 @@ public Map<MetadataType, MetadataComponent> 
deserialize(Descriptor descriptor, E
         logger.trace("Load metadata for {}", descriptor);
         File statsFile = descriptor.fileFor(Components.STATS);
         if (!statsFile.exists())
+            throw new NoSuchFileException("Stats component of sstable " + 
descriptor + " is missing");

Review Comment:
   Discussed here: 
https://github.com/apache/cassandra/pull/4118#discussion_r2067067477
   
   When Component.STATS was introduced in CASSANDRA-6356, a default was 
provided in case the file was missing, to support migration from earlier 
versions. This has been present since BigFormat `-ka` which is below the 
minimum now-supported SSTable version `-ma`: 
https://github.com/apache/cassandra/blob/f340514bbe1a8b88c5df3a3949bfc1fd937e576b/src/java/org/apache/cassandra/io/sstable/format/big/BigFormat.java#L119
   
   How would you assess the risk of this change, assuming all relevant tests 
pass? Conversation on devlist?



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