[GitHub] [flink] reswqa commented on a diff in pull request #19960: [FLINK-27907][runtime] implement disk read and write logic for hybrid shuffle

[GitBox <gi...@apache.org>]

reswqa commented on code in PR #19960:
URL: https://github.com/apache/flink/pull/19960#discussion_r909422919


##########
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/BufferReaderWriterUtil.java:
##########
@@ -162,8 +162,19 @@ static Buffer readFileRegionFromByteChannel(FileChannel channel, ByteBuffer head
         return new FileRegionBuffer(channel, position, size, dataType, isCompressed);
     }
 
+    public static int setBufferWithHeader(
+            Buffer buffer, ByteBuffer[] bufferWithHeaders, int index) {
+        ByteBuffer header = BufferReaderWriterUtil.allocatedHeaderBuffer();
+        BufferReaderWriterUtil.setByteChannelBufferHeader(buffer, header);
+
+        bufferWithHeaders[index] = header;
+        bufferWithHeaders[index + 1] = buffer.getNioBufferReadable();
+
+        return header.remaining() + buffer.readableBytes();
+    }

Review Comment:
   Move this method to caller side and change return type to void.



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