zentol commented on a change in pull request #6477: [FLINK-10027] Add logging 
to StreamingFileSink
URL: https://github.com/apache/flink/pull/6477#discussion_r207218923
 
 

 ##########
 File path: 
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/sink/filesystem/Buckets.java
 ##########
 @@ -185,35 +193,29 @@ void publishUpToCheckpoint(long checkpointId) throws 
IOException {
 
        void snapshotState(
                        final long checkpointId,
-                       final ListState<byte[]> bucketStates,
-                       final ListState<Long> partCounterState) throws 
Exception {
+                       final ListState<byte[]> bucketStatesContainer,
+                       final ListState<Long> partCounterStateContainer) throws 
Exception {
+               Preconditions.checkState(fsWriter != null && 
bucketStateSerializer != null);
 
-               Preconditions.checkState(
-                               fileSystemWriter != null && 
bucketStateSerializer != null,
-                               "sink has not been initialized"
 
 Review comment:
   keep error message

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