AHeise commented on a change in pull request #11507: [FLINK-16587] Add basic
CheckpointBarrierHandler for unaligned checkpoint
URL: https://github.com/apache/flink/pull/11507#discussion_r408165079
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File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/SingleInputGate.java
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@@ -170,9 +173,14 @@
private final CompletableFuture<Void> closeFuture;
+ @Nullable
+ protected BufferReceivedListener bufferReceivedListener;
Review comment:
This approach is an elegant solution in the case of unaligned checkpoints.
However, on aligned checkpoint, it adds a volatile access to each access (as
it's currently never non-null).
I could make the aligned case use a no-op listener, but that would cause
unnecessary buffer copying in `RemoteInputChannel`...
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