Re: [PR] [Core]Fix Flink batch reads the paimon partition table jobManager oom [paimon]

["JingsongLi (via GitHub)" <gi...@apache.org>]

JingsongLi commented on PR #3245:
URL: https://github.com/apache/paimon/pull/3245#issuecomment-2068919116

   You can try:
   
   ## SnapshotReaderImpl
   ```
       @Override
       public List<BinaryRow> partitions() {
           List<ManifestEntry> entryList = scan.plan().files();
   
           return entryList.stream()
                   .collect(
                           Collectors.groupingBy(
                                   ManifestEntry::partition,
                                   LinkedHashMap::new,
                                   Collectors.reducing((a, b) -> b)))
                   .values()
                   .stream()
                   .map(Optional::get)
                   .map(ManifestEntry::partition)
           return scan.readSimpleEntries().stream()
                   .map(SimpleFileEntry::partition)
                   .distinct()
                   .collect(Collectors.toList());
       }
   ```
   
   ## FlinkCatalog
   ```
               ReadBuilder readBuilder = table.newReadBuilder();
               if (partitionSpec != null && partitionSpec.getPartitionSpec() != null) {
                   readBuilder.withPartitionFilter(partitionSpec.getPartitionSpec());
               }
   
               List<BinaryRow> partitions = readBuilder.newScan().listPartitions();
   ```


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