melin opened a new issue, #10725:
URL: https://github.com/apache/iceberg/issues/10725
### Query engine
JAVA API
### Question
There are two partitions in the table. Query the data files of one
partition, and the data files of two partitions are returned.
filter(expression) does not take effect
```java
DataFilesTable dataFilesTable = (DataFilesTable)
MetadataTableUtils.createMetadataTableInstance(icebergTable,
MetadataTableType.DATA_FILES);
Expression expression = Expressions.and(Expressions.equal("partition.pt",
"20240720"),
Expressions.equal("partition.type", 1));
try (CloseableIterable<CombinedScanTask> tasks =
dataFilesTable.newScan().filter(expression).planTasks()) {
tasks.forEach(task -> {
task.files().forEach(fileScanTask -> {
DataTask fileTask = (DataTask) fileScanTask;
fileTask.rows().forEach(row -> {
System.out.println("row: " + row);
System.out.println("\t" + row.get(1, String.class));
System.out.println("\t" + row.get(4, PartitionData.class));
System.out.println("\t" + row.get(5, Long.class));
System.out.println("\t" + row.get(6, Long.class));
});
System.out.println(fileTask.rows());
});
});
}
```
Result:
```
row: org.apache.iceberg.MetricsUtil$StructWithReadableMetrics@11eec06b
hdfs://cdh1:8020/user/hive/warehouse/bigdata.db/iceberg_sample_2/data/pt=20240720/type=1/00000-1-17505e37-abe7-430a-825e-f2fdc4f0af6b-0-00001.parquet
PartitionData{pt=20240720, type=1}
1
1383
row: org.apache.iceberg.MetricsUtil$StructWithReadableMetrics@65600fb3
hdfs://cdh1:8020/user/hive/warehouse/bigdata.db/iceberg_sample_2/data/pt=20240719/type=2/00000-1-17505e37-abe7-430a-825e-f2fdc4f0af6b-0-00002.parquet
PartitionData{pt=20240719, type=2}
1
1383
```
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