hililiwei opened a new pull request, #6610:
URL: https://github.com/apache/iceberg/pull/6610

   ```
   ➜  iceberg git:(inspecting2) ✗ git diff --no-index  
flink/v1.15/flink/src/main/java/org/apache/iceberg/flink/ 
flink/v1.16/flink/src/main/java/org/apache/iceberg/flink/
    import org.apache.flink.table.api.constraints.UniqueConstraint;
    import org.apache.flink.table.connector.ChangelogMode;
   +import org.apache.flink.table.connector.ProviderContext;
    import org.apache.flink.table.connector.sink.DataStreamSinkProvider;
    import org.apache.flink.table.connector.sink.DynamicTableSink;
    import org.apache.flink.table.connector.sink.abilities.SupportsOverwrite;
    import org.apache.flink.table.connector.sink.abilities.SupportsPartitioning;
   +import org.apache.flink.table.data.RowData;
    import org.apache.flink.types.RowKind;
    import org.apache.flink.util.Preconditions;
    import org.apache.iceberg.flink.sink.FlinkSink;
   @@ -69,16 +73,20 @@ public class IcebergTableSink implements 
DynamicTableSink, SupportsPartitioning,
        List<String> equalityColumns =
            
tableSchema.getPrimaryKey().map(UniqueConstraint::getColumns).orElseGet(ImmutableList::of);
   
   -    return (DataStreamSinkProvider)
   -        (providerContext, dataStream) ->
   -            FlinkSink.forRowData(dataStream)
   -                .tableLoader(tableLoader)
   -                .tableSchema(tableSchema)
   -                .equalityFieldColumns(equalityColumns)
   -                .overwrite(overwrite)
   -                .setAll(writeProps)
   -                .flinkConf(readableConfig)
   -                .append();
   +    return new DataStreamSinkProvider() {
   +      @Override
   +      public DataStreamSink<?> consumeDataStream(
   +          ProviderContext providerContext, DataStream<RowData> dataStream) {
   +        return FlinkSink.forRowData(dataStream)
   +            .tableLoader(tableLoader)
   +            .tableSchema(tableSchema)
   +            .equalityFieldColumns(equalityColumns)
   +            .overwrite(overwrite)
   +            .setAll(writeProps)
   +            .flinkConf(readableConfig)
   +            .append();
   +      }
   +    };
      }
   
      @Override
   diff --git 
a/flink/v1.15/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergFilesCommitter.java
 
b/flink/v1.16/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergFilesCommitter.java
   index d84e2cb70..b686a76c9 100644
   --- 
a/flink/v1.15/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergFilesCommitter.java
   +++ 
b/flink/v1.16/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergFilesCommitter.java
   @@ -285,8 +285,6 @@ class IcebergFilesCommitter extends 
AbstractStreamOperator<Void>
            commitDeltaTxn(pendingResults, summary, newFlinkJobId, operatorId, 
checkpointId);
          }
          continuousEmptyCheckpoints = 0;
   -    } else {
   -      LOG.info("Skipping committing empty checkpoint {}", checkpointId);
        }
      }
   ```
   
   The second difference is because https://github.com/apache/iceberg/pull/6452 
is not ported to the older versions. @pvary 
   


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