curcur commented on a change in pull request #12205:
URL: https://github.com/apache/flink/pull/12205#discussion_r427066016



##########
File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/channel/ChannelStateWriteRequestExecutorImpl.java
##########
@@ -79,7 +84,7 @@ private void loop() throws Exception {
                                dispatcher.dispatch(deque.take());
                        } catch (InterruptedException e) {
                                if (!wasClosed) {
-                                       LOG.debug("interrupted while waiting 
for a request (continue waiting)", e);
+                                       LOG.debug(taskName + "interrupted while 
waiting for a request (continue waiting)", e);

Review comment:
       add a white space
   
   "interrupted... => " interrupted...

##########
File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/channel/ChannelStateWriterImpl.java
##########
@@ -104,48 +111,57 @@ public void start(long checkpointId, CheckpointOptions 
checkpointOptions) {
 
        @Override
        public void addInputData(long checkpointId, InputChannelInfo info, int 
startSeqNum, Buffer... data) {
-               LOG.debug("add input data, checkpoint id: {}, channel: {}, 
startSeqNum: {}, num buffers: {}",
-                       checkpointId, info, startSeqNum, data == null ? 0 : 
data.length);
+               LOG.debug("{} add input data, checkpoint id: {}, channel: {}, 
startSeqNum: {}, num buffers: {}",

Review comment:
       Should the first parameter be in a separate line?
   
   nit: add -> adds, similarly in other places. It reads a bit strange 
otherwise. But I do not think it is a big problem.

##########
File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/channel/ChannelStateWriterImpl.java
##########
@@ -104,48 +111,57 @@ public void start(long checkpointId, CheckpointOptions 
checkpointOptions) {
 
        @Override
        public void addInputData(long checkpointId, InputChannelInfo info, int 
startSeqNum, Buffer... data) {
-               LOG.debug("add input data, checkpoint id: {}, channel: {}, 
startSeqNum: {}, num buffers: {}",
-                       checkpointId, info, startSeqNum, data == null ? 0 : 
data.length);
+               LOG.debug("{} add input data, checkpoint id: {}, channel: {}, 
startSeqNum: {}, num buffers: {}",
+                       taskName,
+                       checkpointId,
+                       info,
+                       startSeqNum,
+                       data == null ? 0 : data.length);
                enqueue(write(checkpointId, info, checkBufferType(data)), 
false);
        }
 
        @Override
        public void addOutputData(long checkpointId, ResultSubpartitionInfo 
info, int startSeqNum, Buffer... data) {
-               LOG.debug("add output data, checkpoint id: {}, channel: {}, 
startSeqNum: {}, num buffers: {}",
-                       checkpointId, info, startSeqNum, data == null ? 0 : 
data.length);
+               LOG.debug("{} add output data, checkpoint id: {}, channel: {}, 
startSeqNum: {}, num buffers: {}",

Review comment:
       a separate line?




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