TheR1sing3un opened a new issue, #12139: URL: https://github.com/apache/hudi/issues/12139
**_Tips before filing an issue_** - Have you gone through our [FAQs](https://hudi.apache.org/learn/faq/)? - Join the mailing list to engage in conversations and get faster support at [email protected]. - If you have triaged this as a bug, then file an [issue](https://issues.apache.org/jira/projects/HUDI/issues) directly. **Describe the problem you faced** I had a question when reading the source code in `NewHoodieParquetFileFormat` and `HoodieFileIndex`. When we enable `hoodie.datasource.read.use.new.parquet.file.format` and then hudi will provide a `HadoopFsRelation` with `NewHoodieParquetFileFormat`. <img width="919" alt="image" src="https://github.com/user-attachments/assets/8d92d609-bede-4db8-8ab8-d691d625c487";> <img width="1139" alt="image" src="https://github.com/user-attachments/assets/98b19654-3c46-4105-b3c8-543f076379c7";> And `FileSourceScanExec#createReadRDD` will query needed Partitions. <img width="714" alt="image" src="https://github.com/user-attachments/assets/4efe0f66-e201-4d46-8400-08618a7ab5a1";> `relation.location.listFiles` in this case will be redirected to `HoodieFileIndex#listFiles`. <img width="1091" alt="image" src="https://github.com/user-attachments/assets/64cb5bf8-aac7-407b-93d7-50e2153ac023";> And I find that for each file-slice: 1. BaseFile is present, return PartitionedFile with BaseFile's status 2. LogFile nonEmpty, return PartitionedFile with any (random maybe) LogFile's status. My question is, should we choose the file with the median log-files sorted by size as the PartitionedFile rather than a random log-file? In Spark, it merges multiple PartitionedFile into a FilePartition based on the size of each PartitionedFile. <img width="929" alt="image" src="https://github.com/user-attachments/assets/3e09e0be-7c2b-458c-9b44-99b6232d62b0";> <img width="693" alt="image" src="https://github.com/user-attachments/assets/46c43f87-1bbc-433e-a6ec-a1fb600c6452";> I think for a PartitionedFile that is actually a FileSlice, we should choose a more representative file size. **To Reproduce** Steps to reproduce the behavior: 1. 4. 5. 6. **Expected behavior** A clear and concise description of what you expected to happen. **Environment Description** * Hudi version : * Spark version : * Hive version : * Hadoop version : * Storage (HDFS/S3/GCS..) : * Running on Docker? (yes/no) : **Additional context** Add any other context about the problem here. **Stacktrace** ```Add the stacktrace of the error.``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
