lirui-apache commented on a change in pull request #10721: [FLINK-15429][hive] 
HiveObjectConversion implementations need to hand…
URL: https://github.com/apache/flink/pull/10721#discussion_r361971286
 
 

 ##########
 File path: 
flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/catalog/hive/client/HiveShimV100.java
 ##########
 @@ -354,6 +354,9 @@ public CatalogColumnStatisticsDataDate 
toFlinkDateColStats(ColumnStatisticsData
 
        @Override
        public Object toHiveTimestamp(Object flinkTimestamp) {
+               if (flinkTimestamp == null) {
 
 Review comment:
   I think we can let `HiveObjectConversion` rely on `HiveShim` to handle 
nulls. So we don't need the null check in both of them.

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