jrwest commented on code in PR #3606:
URL: https://github.com/apache/cassandra/pull/3606#discussion_r1811687069


##########
src/java/org/apache/cassandra/io/util/CompressedChunkReader.java:
##########
@@ -117,8 +141,23 @@ public void readChunk(long position, ByteBuffer 
uncompressed)
                 {
                     ByteBuffer compressed = bufferHolder.getBuffer(length);
 
-                    if (channel.read(compressed, chunk.offset) != length)
-                        throw new CorruptBlockException(channel.filePath(), 
chunk);
+                    if (readAheadBuffer != null && readAheadBuffer.hasBuffer())

Review Comment:
   @dcapwell apologies, not sure I totally grok this one either. Do you mean 
why do we only read one block at a time? 



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