Github user jpinkul commented on a diff in the pull request:
https://github.com/apache/spark/pull/16888#discussion_r127502197
--- Diff:
common/network-common/src/main/java/org/apache/spark/network/protocol/MessageWithHeader.java
---
@@ -44,6 +44,27 @@
private final long bodyLength;
private long totalBytesTransferred;
+ @Override
+ public FileRegion touch() {
+ return this;
+ }
+
+ @Override
+ public FileRegion touch(Object hint) {
+ return this;
+ }
+
+ @Override
+ public FileRegion retain() {
+ return this;
--- End diff --
I believe this breaks the netty reference counting logic, I think instead
it should be
```
return (TestFileRegion)super.retain();
```
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