gaoyunhaii commented on a change in pull request #14116:
URL: https://github.com/apache/flink/pull/14116#discussion_r530189998



##########
File path: 
flink-table/flink-table-runtime-blink/src/main/java/org/apache/flink/table/filesystem/stream/StreamingFileWriter.java
##########
@@ -134,13 +143,19 @@ public void notifyCheckpointComplete(long checkpointId) 
throws Exception {
 
        private void commitUpToCheckpoint(long checkpointId) throws Exception {
                helper.commitUpToCheckpoint(checkpointId);
+
+               NavigableMap<Long, Set<String>> newPartitions = 
this.newPartitions.headMap(checkpointId, true);
+               Set<String> partitions = new HashSet<>(committablePartitions);
+               committablePartitions.clear();
+               newPartitions.values().forEach(partitions::addAll);
+               newPartitions.clear();

Review comment:
       Will clear the headMap also cleans the part before the current 
checkpoint in `this.newPartitions` ? 

##########
File path: 
flink-table/flink-table-runtime-blink/src/main/java/org/apache/flink/table/filesystem/stream/StreamingFileWriter.java
##########
@@ -134,13 +143,19 @@ public void notifyCheckpointComplete(long checkpointId) 
throws Exception {
 
        private void commitUpToCheckpoint(long checkpointId) throws Exception {
                helper.commitUpToCheckpoint(checkpointId);
+
+               NavigableMap<Long, Set<String>> newPartitions = 
this.newPartitions.headMap(checkpointId, true);

Review comment:
       Change to another name to avoid override variable names ? 




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