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Core: Add setter for firstRowId in V4 metadata #16849

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9 changes: 9 additions & 0 deletions core/src/main/java/org/apache/iceberg/TrackedFileStruct.java
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
import java.util.Set;
import org.apache.iceberg.avro.SupportsIndexProjection;
import org.apache.iceberg.relocated.com.google.common.base.MoreObjects;
import org.apache.iceberg.relocated.com.google.common.base.Preconditions;
import org.apache.iceberg.types.Type;
import org.apache.iceberg.types.Types;
import org.apache.iceberg.util.ArrayUtil;
Expand Down Expand Up @@ -162,6 +163,14 @@ private TrackedFileStruct(TrackedFileStruct toCopy, boolean withStats, Set<Integ
: null;
}

/** Sets the first row id on this {@link TrackedFileStruct} */
public void setFirstRowId(int firstRowId) {
Preconditions.checkState(
contentType == FileContent.DATA || contentType == FileContent.DATA_MANIFEST,
"Cannot set first row id on an equality delete or delete manifest entry");
((TrackingStruct) tracking).setFirstRowId(firstRowId);

@gaborkaszab gaborkaszab Jun 30, 2026

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Note to self: once the TrackedFileBuilder adjustments are merged, we won't have TrackingString but a TrackingBuilder. Should we introduce such a function on the builder?

}

@Override
public Tracking tracking() {
return tracking;
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8 changes: 8 additions & 0 deletions core/src/main/java/org/apache/iceberg/TrackingStruct.java
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Expand Up @@ -130,6 +130,14 @@ void inheritFrom(Tracking manifestTracking) {
}
}

void setFirstRowId(long newFirstRowId) {
Preconditions.checkArgument(
newFirstRowId >= 0, "Invalid first row ID: %s (must be >= 0)", newFirstRowId);
Preconditions.checkState(status != EntryStatus.ADDED, "Cannot set first row id on ADDED entry");
Preconditions.checkState(firstRowId == null, "First row ID is already set");
this.firstRowId = newFirstRowId;
}

void setManifestLocation(String location) {
this.manifestLocation = location;
}
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52 changes: 52 additions & 0 deletions core/src/test/java/org/apache/iceberg/TestTrackedFileStruct.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
package org.apache.iceberg;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

import java.io.IOException;
import java.nio.ByteBuffer;
Expand All @@ -28,6 +29,8 @@
import org.apache.iceberg.relocated.com.google.common.collect.ImmutableSet;
import org.apache.iceberg.types.Types;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.EnumSource;

class TestTrackedFileStruct {
private static final int WRITER_FORMAT_VERSION_V4 = 4;
Expand Down Expand Up @@ -325,6 +328,48 @@ void testAllFileContentTypesSupported() {
}
}

@ParameterizedTest
@EnumSource(
value = FileContent.class,
names = {"DATA", "DATA_MANIFEST"})
public void testSettingFirstRowId(FileContent content) {
TrackedFileStruct file =
new TrackedFileStruct(
existingTracking(),
content,
WRITER_FORMAT_VERSION_V4,
"s3://bucket/data/file",
FileFormat.PARQUET,
new PartitionData(Types.StructType.of()),
0L,
0L);

file.setFirstRowId(42);

assertThat(file.tracking().firstRowId()).isEqualTo(42L);
}

@ParameterizedTest
@EnumSource(
value = FileContent.class,
names = {"EQUALITY_DELETES", "DELETE_MANIFEST"})
public void testSettingFirstRowIdNotAllowedForSomeContentTypes(FileContent content) {
TrackedFileStruct file =
new TrackedFileStruct(
existingTracking(),
content,
WRITER_FORMAT_VERSION_V4,
"s3://bucket/data/file",
FileFormat.PARQUET,
new PartitionData(Types.StructType.of()),
0L,
0L);

assertThatThrownBy(() -> file.setFirstRowId(42))
.isInstanceOf(IllegalStateException.class)
.hasMessage("Cannot set first row id on an equality delete or delete manifest entry");
}

@Test
void testJavaSerializationRoundTrip() throws IOException, ClassNotFoundException {
TrackedFileStruct file = createFullTrackedFile();
Expand Down Expand Up @@ -412,6 +457,13 @@ private static PartitionData newPartition(int idBucket, String category) {
return partition;
}

private static TrackingStruct existingTracking() {
TrackingStruct source = (TrackingStruct) TrackingBuilder.added(5L).build();
source.set(2, 10L);
source.set(3, 11L);
return (TrackingStruct) TrackingBuilder.from(source, 20L).build();
}

static TrackedFileStruct createTrackedFileWithStats() {
Types.StructType statsStruct =
Types.StructType.of(
Expand Down
57 changes: 57 additions & 0 deletions core/src/test/java/org/apache/iceberg/TestTrackingStruct.java
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Original file line number Diff line number Diff line change
Expand Up @@ -211,6 +211,63 @@ void testInheritFromNullIsNoOp() {
assertThat(tracking.fileSequenceNumber()).isNull();
}

@Test
public void testFirstRowIdIsNullInitially() {
TrackingStruct source = (TrackingStruct) TrackingBuilder.added(5L).build();
source.set(DATA_SEQUENCE_NUMBER_ORDINAL, 10L);
source.set(FILE_SEQUENCE_NUMBER_ORDINAL, 11L);

assertThat(source.firstRowId()).isNull();

TrackingStruct existing = (TrackingStruct) TrackingBuilder.from(source, 20L).build();

assertThat(existing.firstRowId()).isNull();
}

@Test
public void testSettingFirstRowId() {
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TrackingStruct source = (TrackingStruct) TrackingBuilder.added(5L).build();
source.set(DATA_SEQUENCE_NUMBER_ORDINAL, 10L);
source.set(FILE_SEQUENCE_NUMBER_ORDINAL, 11L);

TrackingStruct existing = (TrackingStruct) TrackingBuilder.from(source, 20L).build();
existing.setFirstRowId(150L);

assertThat(existing.firstRowId()).isEqualTo(150L);
}

@Test
public void testSettingFirstRowIdForAddedEntry() {
TrackingStruct added = (TrackingStruct) TrackingBuilder.added(5L).build();

assertThatThrownBy(() -> added.setFirstRowId(12L))
.isInstanceOf(IllegalStateException.class)
.hasMessage("Cannot set first row id on ADDED entry");
}

@Test
public void testRejectSettingFirstRowIdIfAlreadySet() {
TrackingStruct source = (TrackingStruct) TrackingBuilder.added(5L).build();
source.set(DATA_SEQUENCE_NUMBER_ORDINAL, 10L);
source.set(FILE_SEQUENCE_NUMBER_ORDINAL, 11L);

TrackingStruct existing = (TrackingStruct) TrackingBuilder.from(source, 20L).build();
existing.setFirstRowId(0L);

assertThatThrownBy(() -> existing.setFirstRowId(200L))
.isInstanceOf(IllegalStateException.class)
.hasMessage("First row ID is already set");
}

@Test
public void testInvalidFirstRowId() {
TrackingStruct tracking = (TrackingStruct) TrackingBuilder.added(5L).build();

assertThatThrownBy(() -> tracking.setFirstRowId(-1L))
.isInstanceOf(IllegalArgumentException.class)
.hasMessage("Invalid first row ID: -1 (must be >= 0)");
}

private static Tracking createManifestTracking(long snapshotId, long sequenceNumber) {
TrackingStruct tracking = new TrackingStruct(Tracking.schema());
tracking.set(STATUS_ORDINAL, EntryStatus.ADDED.id());
Expand Down