mxm commented on code in PR #16844: URL: https://github.com/apache/iceberg/pull/16844#discussion_r3430247753
########## flink/v2.1/flink/src/test/java/org/apache/iceberg/flink/maintenance/operator/TestEqualityConvertReader.java: ########## @@ -0,0 +1,385 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.iceberg.flink.maintenance.operator; + +import static org.apache.iceberg.flink.SimpleDataUtil.createRecord; +import static org.assertj.core.api.Assertions.assertThat; +import static org.assertj.core.api.Assertions.assertThatThrownBy; + +import java.io.File; +import java.io.IOException; +import java.nio.file.Path; +import java.util.List; +import org.apache.flink.streaming.util.OneInputStreamOperatorTestHarness; +import org.apache.flink.streaming.util.ProcessFunctionTestHarnesses; +import org.apache.iceberg.DataFile; +import org.apache.iceberg.DataFiles; +import org.apache.iceberg.DeleteFile; +import org.apache.iceberg.FileFormat; +import org.apache.iceberg.Files; +import org.apache.iceberg.ManifestFile; +import org.apache.iceberg.ManifestFiles; +import org.apache.iceberg.ManifestReader; +import org.apache.iceberg.PartitionData; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.Table; +import org.apache.iceberg.data.FileHelpers; +import org.apache.iceberg.data.GenericAppenderHelper; +import org.apache.iceberg.data.GenericRecord; +import org.apache.iceberg.deletes.PositionDelete; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.relocated.com.google.common.collect.Sets; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.io.TempDir; + +class TestEqualityConvertReader extends OperatorTestBase { + + @TempDir private Path tempDir; + + @Test + void emitsAddStagingDataRowForDataFile() throws Exception { + Table table = createTableWithDelete(3); + insert(table, 1, "a"); + + DataFile dataFile = getFirstDataFile(table); + PartitionSpec spec = table.specs().get(dataFile.specId()); + List<Integer> fieldIds = Lists.newArrayList(1); + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + ReadCommand cmd = + ReadCommand.stagingDataFile(new FlinkAddedRowsScanTask(dataFile, spec), 0L, 0L, 0L); + harness.processElement(cmd, 0); + + List<IndexCommand> output = harness.extractOutputValues(); + assertThat(output).hasSize(1); + // stagingDataFile marks a staging snapshot's new data, so the reader emits + // ADD_STAGING_DATA_ROW. + assertThat(output.get(0).type()).isEqualTo(IndexCommand.Type.ADD_STAGING_DATA_ROW); + assertThat(output.get(0).rowPosition().dataFilePath()).isEqualTo(dataFile.location()); + assertThat(output.get(0).rowPosition().position()).isZero(); + } + } + + @Test + void emitsAddDataRowWhenNotStaging() throws Exception { + Table table = createTableWithDelete(3); + insert(table, 1, "a"); + + DataFile dataFile = getFirstDataFile(table); + PartitionSpec spec = table.specs().get(dataFile.specId()); + List<Integer> fieldIds = Lists.newArrayList(1); + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + // Same task type as the staging test: the command's staging flag, not the task type, decides + // that main reindex data is indexed immediately as ADD_DATA_ROW. + ReadCommand cmd = + ReadCommand.dataFile(new FlinkAddedRowsScanTask(dataFile, spec), 0L, 0L, 0L); + harness.processElement(cmd, 0); + + List<IndexCommand> output = harness.extractOutputValues(); + assertThat(output).hasSize(1); + assertThat(output.get(0).type()).isEqualTo(IndexCommand.Type.ADD_DATA_ROW); + } + } + + @Test + void emitsResolveDeleteForEqDeleteFile() throws Exception { + Table table = createTableWithDelete(3); + DeleteFile eqDelete = writeEqualityDelete(table, 1, "a"); + PartitionSpec spec = table.specs().get(eqDelete.specId()); + List<Integer> fieldIds = eqDelete.equalityFieldIds(); + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + ReadCommand cmd = ReadCommand.eqDeleteFile(eqDelete, spec, 0L, 0L, 0L); + harness.processElement(cmd, 0); + + List<IndexCommand> output = harness.extractOutputValues(); + assertThat(output).hasSize(1); + assertThat(output.get(0).type()).isEqualTo(IndexCommand.Type.RESOLVE_DELETE); + assertThat(output.get(0).rowPosition()).isNull(); + } + } + + @Test + void tracksPositionsAcrossRecords() throws Exception { + Table table = createTableWithDelete(3); + + DataFile dataFile = + new GenericAppenderHelper(table, FileFormat.PARQUET, tempDir) + .writeFile(Lists.newArrayList(createRecord(1, "a"), createRecord(2, "b"))); + table.newAppend().appendFile(dataFile).commit(); + table.refresh(); + + PartitionSpec spec = table.specs().get(dataFile.specId()); + List<Integer> fieldIds = Lists.newArrayList(1); + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + ReadCommand cmd = + ReadCommand.stagingDataFile(new FlinkAddedRowsScanTask(dataFile, spec), 0L, 0L, 0L); + harness.processElement(cmd, 0); + + List<IndexCommand> output = harness.extractOutputValues(); + assertThat(output).hasSize(2); + assertThat(output.get(0).rowPosition().position()).isZero(); + assertThat(output.get(1).rowPosition().position()).isEqualTo(1); + } + } + + @Test + void skipsDeletedPositionsWhenCreatingIndexFromMain() throws Exception { + Table table = createTableWithDelete(3); + + DataFile dataFile = + new GenericAppenderHelper(table, FileFormat.PARQUET, tempDir) + .writeFile( + Lists.newArrayList( + createRecord(1, "a"), createRecord(2, "b"), createRecord(3, "c"))); + table.newAppend().appendFile(dataFile).commit(); + table.refresh(); + + // DV marks position 1 (id=2) as deleted on main. When the reader creates the worker's index + // from this data file, it must skip position 1 and emit rows only for positions 0 and 2. + DeleteFile dv = writeDV(table, dataFile.location(), 1L); + + PartitionSpec spec = table.specs().get(dataFile.specId()); + List<Integer> fieldIds = Lists.newArrayList(1); + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + ReadCommand cmd = + ReadCommand.stagingDataFile( + new FlinkAddedRowsScanTask(dataFile, spec, Lists.newArrayList(dv)), 0L, 0L, 0L); + harness.processElement(cmd, 0); + + List<IndexCommand> output = harness.extractOutputValues(); + assertThat(output).hasSize(2); + assertThat(output.get(0).rowPosition().position()).isZero(); + assertThat(output.get(1).rowPosition().position()).isEqualTo(2); + } + } + + @Test + void sameKeyFromDataAndDeleteProducesEqualSerializedValues() throws Exception { + Table table = createTableWithDelete(3); + + DataFile dataFile = + new GenericAppenderHelper(table, FileFormat.PARQUET, tempDir) + .writeFile(Lists.newArrayList(createRecord(1, "a"))); + table.newAppend().appendFile(dataFile).commit(); + table.refresh(); + + DeleteFile eqDelete = writeEqualityDelete(table, 1, "a"); + PartitionSpec dataSpec = table.specs().get(dataFile.specId()); + PartitionSpec deleteSpec = table.specs().get(eqDelete.specId()); + List<Integer> fieldIds = eqDelete.equalityFieldIds(); + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + harness.processElement( + ReadCommand.stagingDataFile(new FlinkAddedRowsScanTask(dataFile, dataSpec), 0L, 0L, 0L), + 0); + harness.processElement(ReadCommand.eqDeleteFile(eqDelete, deleteSpec, 0L, 0L, 0L), 1); + + List<IndexCommand> output = harness.extractOutputValues(); + assertThat(output).hasSize(2); + assertThat(output.get(0).type()).isEqualTo(IndexCommand.Type.ADD_STAGING_DATA_ROW); + assertThat(output.get(1).type()).isEqualTo(IndexCommand.Type.RESOLVE_DELETE); + assertThat(output.get(0).key()).isEqualTo(output.get(1).key()); + } + } + + @Test + void propagatesMainSnapshotId() throws Exception { + Table table = createTableWithDelete(3); + insert(table, 1, "a"); + + DataFile dataFile = getFirstDataFile(table); + PartitionSpec spec = table.specs().get(dataFile.specId()); + List<Integer> fieldIds = Lists.newArrayList(1); + long mainSnapshotId = 42L; + long mainSequenceNumber = 7L; + long dataSequenceNumber = 9L; + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + ReadCommand cmd = + ReadCommand.stagingDataFile( + new FlinkAddedRowsScanTask(dataFile, spec), + mainSnapshotId, + mainSequenceNumber, + dataSequenceNumber); + harness.processElement(cmd, 0); + + List<IndexCommand> output = harness.extractOutputValues(); + assertThat(output).hasSize(1); + assertThat(output.get(0).mainSnapshotId()).isEqualTo(mainSnapshotId); + assertThat(output.get(0).mainSequenceNumber()).isEqualTo(mainSequenceNumber); + assertThat(output.get(0).rowPosition().dataSequenceNumber()).isEqualTo(dataSequenceNumber); + } + } + + @Test + void routesExceptionToErrorStream() throws Exception { + Table table = createTableWithDelete(3); + insert(table, 1, "a"); + + DataFile dataFile = getFirstDataFile(table); + DataFile missing = + DataFiles.builder(table.spec()) + .copy(dataFile) + .withPath(dataFile.location() + ".missing") + .build(); + PartitionSpec spec = table.specs().get(dataFile.specId()); + List<Integer> fieldIds = Lists.newArrayList(1); + + try (OneInputStreamOperatorTestHarness<ReadCommand, IndexCommand> harness = + createHarness(fieldIds)) { + harness.open(); + + // Non-existent file path causes the reader to throw. + ReadCommand cmd = + ReadCommand.stagingDataFile(new FlinkAddedRowsScanTask(missing, spec), 0L, 0L, 0L); + harness.processElement(cmd, 0); + + assertThat(harness.extractOutputValues()).isEmpty(); + assertThat(harness.getSideOutput(TaskResultAggregator.ERROR_STREAM)).hasSize(1); Review Comment: Thanks. 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