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[flink] Fix scan partitions with partial partition spec #9225

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Merged
JingsongLi merged 1 commit into from
Aug 15, 2026
+15 −1
Merged

[flink] Fix scan partitions with partial partition spec #9225

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6 changes: 5 additions & 1 deletion ...imon-flink-common/src/main/java/org/apache/paimon/flink/lookup/StaticPartitionLoader.java
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@
import org.apache.paimon.utils.InternalRowPartitionComputer;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

Expand All @@ -48,9 +49,12 @@ public void open() {
String defaultPartitionName = Options.fromMap(table.options()).get(PARTITION_DEFAULT_NAME);
InternalRowSerializer serializer = new InternalRowSerializer(partitionType);
for (Map<String, String> spec : scanPartitions) {
Map<String, String> completedSpec = new LinkedHashMap<>(spec);
table.partitionKeys()
.forEach(key -> completedSpec.putIfAbsent(key, defaultPartitionName));
GenericRow row =
InternalRowPartitionComputer.convertSpecToInternalRow(
spec, partitionType, defaultPartitionName);
completedSpec, partitionType, defaultPartitionName);
partitions.add(serializer.toBinaryRow(row).copy());
}
}
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10 changes: 10 additions & 0 deletions ...flink/paimon-flink-common/src/test/java/org/apache/paimon/flink/BatchFileStoreITCase.java
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Expand Up @@ -1101,6 +1101,16 @@ public void testScanWithSpecifiedPartitions() {
assertThat(sql(query)).containsExactly(Row.of(1, 11), Row.of(1, 12), Row.of(2, 22));
}

@Test
public void testScanWithPartialSpecifiedPartition() {
sql("CREATE TABLE P (dt STRING, hh INT, v INT) PARTITIONED BY (dt, hh)");
sql(
"INSERT INTO P VALUES ('20260814', CAST(NULL AS INT), 1), ('20260814', 10, 2), ('20260815', CAST(NULL AS INT), 3)");

assertThat(sql("SELECT COUNT(*) FROM P /*+ OPTIONS('scan.partitions' = 'dt=20260814') */"))
.containsExactly(Row.of(1L));
}

@Test
public void testScanWithSpecifiedPartitionsWithFieldMapping() {
sql("CREATE TABLE P (id INT, v INT, pt STRING) PARTITIONED BY (pt)");
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