franz1981 commented on code in PR #12163:
URL: https://github.com/apache/kafka/pull/12163#discussion_r873638337
##########
clients/src/main/java/org/apache/kafka/common/utils/Checksums.java:
##########
@@ -40,11 +55,41 @@ public static void update(Checksum checksum, ByteBuffer
buffer, int length) {
public static void update(Checksum checksum, ByteBuffer buffer, int
offset, int length) {
if (buffer.hasArray()) {
checksum.update(buffer.array(), buffer.position() +
buffer.arrayOffset() + offset, length);
- } else {
- int start = buffer.position() + offset;
- for (int i = start; i < start + length; i++)
- checksum.update(buffer.get(i));
+ return;
+ }
+ if (BYTE_BUFFER_UPDATE != null && buffer.isDirect()) {
+ final int oldPosition = buffer.position();
Review Comment:
We are moving `limit` as well, hence I don't see any advantage re using
`mark/reset`.
Let me know If I've missed something
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