jiyis opened a new issue, #11329:
URL: https://github.com/apache/iceberg/issues/11329
### Query engine
Iceberg API 1.6.1
### Question
### Schema
```java
TableIdentifier tableIdentifier = TableIdentifier.of("default",
"example_table");
Schema schema = new Schema(
Types.NestedField.optional(1, "event_id", Types.StringType.get()),
Types.NestedField.optional(2, "username", Types.StringType.get()),
Types.NestedField.optional(3, "userid", Types.IntegerType.get()),
Types.NestedField.optional(4, "api_version", Types.StringType.get()),
Types.NestedField.optional(5, "command", Types.StringType.get())
);
PartitionSpec spec = PartitionSpec.builderFor(schema)
.bucket("event_id", 10)
.build();
```
### Insert data
```java
TableIdentifier name = TableIdentifier.of("default", "example_table");
Table table = catalog.loadTable(name);
Schema schema = table.schema();
GenericAppenderFactory appenderFactory = new GenericAppenderFactory(schema);
int partitionId = 1, taskId = 1;
OutputFileFactory outputFileFactory = OutputFileFactory.builderFor(table,
partitionId, taskId)
.format(FileFormat.AVRO).build();
final PartitionKey partitionKey = new PartitionKey(table.spec(),
table.spec().schema());
PartitionedFanoutWriter<Record> partitionedFanoutWriter = new
PartitionedFanoutWriter<>(
table.spec(),
FileFormat.AVRO, appenderFactory, outputFileFactory,
table.io(), 10 * 1024 * 1024) {
@Override
protected PartitionKey partition(Record record) {
partitionKey.partition(record);
return partitionKey;
}
};
GenericRecord genericRecord = GenericRecord.create(table.schema());
List<String> levels = Arrays.asList("info", "debug", "error", "warn");
Random random = new Random();
for (int i = 0; i < 10000; i++) {
GenericRecord record = genericRecord.copy();
String eventId = UUID.randomUUID().toString();
record.setField("event_id", eventId);
record.setField("username", levels.get(random.nextInt(levels.size())));
record.setField("userid", random.nextInt(10000000));
record.setField("api_version", "1.0");
record.setField("command", eventId);
partitionedFanoutWriter.write(record);
}
AppendFiles appendFiles = table.newAppend();
Arrays.stream(partitionedFanoutWriter.dataFiles()).forEach(appendFiles::appendFile);
Snapshot newSnapshot = appendFiles.apply();
appendFiles.commit();
```
### Query
I'd like to filter data by bucket partition,but it seems that no data is
being retrieved. I have confirmed that the data exists, and I can retrieve it
using other fields.
```java
// empty result
CloseableIterable<Record> result = IcebergGenerics.read(tbl)
.where(Expressions.equal(
"event_id"
, "9c83f47c-9a07-4a6b-949c-3bedc31852fe"))
.build();
// empty result
CloseableIterable<Record> result = IcebergGenerics.read(tbl)
.where(Expressions.equal(Expressions.bucket("event_id", 10), 1))
.build();
// has result Record(9c83f47c-9a07-4a6b-949c-3bedc31852fe, info, 2377306,
1.0, 9c83f47c-9a07-4a6b-949c-3bedc31852fe)
CloseableIterable<Record> result = IcebergGenerics.read(tbl)
.where(Expressions.equal(
"command"
, "9c83f47c-9a07-4a6b-949c-3bedc31852fe"))
.build();
```
How should I query data by partition（bucket） field?
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