pnowojski commented on a change in pull request #8361: [FLINK-12434][network] Replace listeners with CompletableFuture in InputGates URL: https://github.com/apache/flink/pull/8361#discussion_r282109817
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/UnionInputGate.java ########## @@ -159,14 +159,28 @@ public void requestPartitions() throws IOException, InterruptedException { @Override public Optional<BufferOrEvent> getNextBufferOrEvent() throws IOException, InterruptedException { + return getNextBufferOrEvent(true); + } + + @Override + public Optional<BufferOrEvent> pollNextBufferOrEvent() throws IOException, InterruptedException { Review comment: I checked and now I remembered. When I was adding `pollNextBufferOrEvent` I tried to get rid of `InterruptedException`, but it comes not only from the blocking implementation, but also from `SpilledSubpartitionView#getNextBuffer` (or `SpillableSubpartitionView`) and it's `bufferPool.requestBufferBlocking();` call. So this method is polling next record if it's available, but can still block in some cases (not pipelined sub-partitions) if we are waiting for memory to be released. I guess this should be added to the method's java doc. I wonder if this affects the mailbox model. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services