Github user pnowojski commented on a diff in the pull request:
https://github.com/apache/flink/pull/4533#discussion_r144014064
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/CreditBasedClientHandler.java
---
@@ -37,18 +43,29 @@
import java.io.IOException;
import java.net.SocketAddress;
+import java.util.ArrayDeque;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicReference;
+/**
+ * Channel handler to read {@link BufferResponse} and {@link
ErrorResponse} messages from the
+ * producer, to write and flush {@link AddCredit} message for the producer.
+ */
class CreditBasedClientHandler extends ChannelInboundHandlerAdapter {
private static final Logger LOG =
LoggerFactory.getLogger(CreditBasedClientHandler.class);
+ /** Channels, which already requested partitions from the producers. */
--- End diff --
ditto
---
