justinmclean opened a new issue, #8350:
URL: https://github.com/apache/gravitino/issues/8350

   ### What would you like to be improved?
   
   In 
common/src/main/java/org/apache/gravitino/dto/responses/PartitionStatisticsListResponse.java
 check if each partition statistic is not null.
   
   Here's a test to help:
   ```
     @Test
     void testPartitionStatisticsListResponseNullElement() {
       AuditDTO audit = 
AuditDTO.builder().withCreator("user1").withCreateTime(Instant.now()).build();
       StatisticDTO statistic =
           
StatisticDTO.builder().withName("stat").withAudit(audit).withValue(Optional.empty()).build();
       PartitionStatisticsDTO valid =
           PartitionStatisticsDTO.of("p1", new StatisticDTO[] {statistic});
       PartitionStatisticsDTO[] stats = new PartitionStatisticsDTO[] {valid, 
null};
       PartitionStatisticsListResponse response = new 
PartitionStatisticsListResponse(stats);
       assertThrows(IllegalArgumentException.class, response::validate);
     }
   ```
   
   ### How should we improve?
   
   Add precondition


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