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Add physical file positions to OrcRecordReader
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175
presto-orc/src/test/java/com/facebook/presto/orc/TestOrcReaderPositions.java
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| /* | ||
| * Licensed 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 com.facebook.presto.orc; | ||
|
|
||
| import com.facebook.presto.orc.OrcTester.TempFile; | ||
| import com.facebook.presto.orc.metadata.IntegerStatistics; | ||
| import com.facebook.presto.orc.metadata.OrcMetadataReader; | ||
| import org.apache.hadoop.hive.ql.exec.FileSinkOperator; | ||
| import org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat; | ||
| import org.apache.hadoop.hive.ql.io.orc.OrcSerde; | ||
| import org.apache.hadoop.hive.ql.io.orc.Writer; | ||
| import org.apache.hadoop.hive.serde2.SerDeException; | ||
| import org.apache.hadoop.hive.serde2.Serializer; | ||
| import org.apache.hadoop.hive.serde2.objectinspector.SettableStructObjectInspector; | ||
| import org.apache.hadoop.hive.serde2.objectinspector.StructField; | ||
| import org.apache.hadoop.io.Writable; | ||
| import org.testng.annotations.Test; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.lang.reflect.Field; | ||
|
|
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| import static com.facebook.presto.orc.OrcTester.Format.ORC_12; | ||
| import static com.facebook.presto.orc.OrcTester.createCustomOrcRecordReader; | ||
| import static com.facebook.presto.orc.OrcTester.createOrcRecordWriter; | ||
| import static com.facebook.presto.orc.OrcTester.createSettableStructObjectInspector; | ||
| import static com.facebook.presto.spi.type.BigintType.BIGINT; | ||
| import static org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory.javaLongObjectInspector; | ||
| import static org.testng.Assert.assertEquals; | ||
| import static org.testng.Assert.fail; | ||
|
|
||
| public class TestOrcReaderPositions | ||
| { | ||
| @Test | ||
| public void testEntireFile() | ||
| throws Exception | ||
| { | ||
| try (TempFile tempFile = new TempFile("test", "orc")) { | ||
| createMultiStripeFile(tempFile.getFile()); | ||
|
|
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| OrcRecordReader reader = createCustomOrcRecordReader(tempFile, new OrcMetadataReader(), OrcPredicate.TRUE, BIGINT); | ||
| assertEquals(reader.getFileRowCount(), 100); | ||
| assertEquals(reader.getTotalRowCount(), 100); | ||
| assertEquals(reader.getPosition(), 0); | ||
|
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||
| for (int i = 0; i < 5; i++) { | ||
| assertEquals(reader.nextBatch(), 20); | ||
| assertEquals(reader.getPosition(), (i + 1) * 20L); | ||
| assertEquals(reader.getFilePosition(), reader.getPosition()); | ||
| assertCurrentBatch(reader, i); | ||
| } | ||
|
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||
| assertEquals(reader.nextBatch(), -1); | ||
| assertEquals(reader.getPosition(), 100); | ||
| assertEquals(reader.getFilePosition(), reader.getPosition()); | ||
| reader.close(); | ||
| } | ||
| } | ||
|
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||
| @Test | ||
| public void testStripeSkipping() | ||
| throws Exception | ||
| { | ||
| try (TempFile tempFile = new TempFile("test", "orc")) { | ||
| createMultiStripeFile(tempFile.getFile()); | ||
|
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||
| // test reading second and fourth stripes | ||
| OrcPredicate predicate = (numberOfRows, statisticsByColumnIndex) -> { | ||
| if (numberOfRows == 100) { | ||
| return true; | ||
| } | ||
| IntegerStatistics stats = statisticsByColumnIndex.get(0).getIntegerStatistics(); | ||
| return ((stats.getMin() == 60) && (stats.getMax() == 117)) || | ||
| ((stats.getMin() == 180) && (stats.getMax() == 237)); | ||
| }; | ||
|
|
||
| OrcRecordReader reader = createCustomOrcRecordReader(tempFile, new OrcMetadataReader(), predicate, BIGINT); | ||
| assertEquals(reader.getFileRowCount(), 100); | ||
| assertEquals(reader.getTotalRowCount(), 40); | ||
| assertEquals(reader.getPosition(), 0); | ||
|
|
||
| // second stripe | ||
| assertEquals(reader.nextBatch(), 20); | ||
| assertEquals(reader.getPosition(), 20); | ||
| assertEquals(reader.getFilePosition(), 40); | ||
| assertCurrentBatch(reader, 1); | ||
|
|
||
| // fourth stripe | ||
| assertEquals(reader.nextBatch(), 20); | ||
| assertEquals(reader.getPosition(), 40); | ||
| assertEquals(reader.getFilePosition(), 80); | ||
| assertCurrentBatch(reader, 3); | ||
|
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||
| assertEquals(reader.nextBatch(), -1); | ||
| assertEquals(reader.getPosition(), 40); | ||
| assertEquals(reader.getFilePosition(), 80); | ||
| reader.close(); | ||
| } | ||
| } | ||
|
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||
| @Test | ||
| public void testFilePositionBeforeNextBatch() | ||
| throws Exception | ||
| { | ||
| try (TempFile tempFile = new TempFile("test", "orc")) { | ||
| createMultiStripeFile(tempFile.getFile()); | ||
|
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| OrcRecordReader reader = createCustomOrcRecordReader(tempFile, new OrcMetadataReader(), OrcPredicate.TRUE, BIGINT); | ||
|
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| try { | ||
| reader.getFilePosition(); | ||
| fail("expected exception"); | ||
| } | ||
| catch (IllegalStateException ignored) { | ||
| } | ||
|
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| reader.close(); | ||
| } | ||
| } | ||
|
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| private static void assertCurrentBatch(OrcRecordReader reader, int stripe) | ||
| throws IOException | ||
| { | ||
| LongVector longVector = new LongVector(20); | ||
| reader.readVector(0, longVector); | ||
| for (int i = 0; i < 20; i++) { | ||
| assertEquals(longVector.vector[i], ((stripe * 20L) + i) * 3); | ||
| } | ||
| } | ||
|
|
||
| // write 5 stripes of 20 values each: (0,3,6,..,57), (60,..,117), .., (..297) | ||
| private static void createMultiStripeFile(File file) | ||
| throws IOException, ReflectiveOperationException, SerDeException | ||
| { | ||
| FileSinkOperator.RecordWriter writer = createOrcRecordWriter(file, ORC_12, OrcTester.Compression.NONE, javaLongObjectInspector); | ||
|
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| @SuppressWarnings("deprecation") Serializer serde = new OrcSerde(); | ||
| SettableStructObjectInspector objectInspector = createSettableStructObjectInspector("test", javaLongObjectInspector); | ||
| Object row = objectInspector.create(); | ||
| StructField field = objectInspector.getAllStructFieldRefs().get(0); | ||
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| for (int i = 0; i < 300; i += 3) { | ||
| if ((i > 0) && (i % 60 == 0)) { | ||
| flushWriter(writer); | ||
| } | ||
|
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| objectInspector.setStructFieldData(row, field, (long) i); | ||
| Writable record = serde.serialize(row, objectInspector); | ||
| writer.write(record); | ||
| } | ||
|
|
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| writer.close(false); | ||
| } | ||
|
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| private static void flushWriter(FileSinkOperator.RecordWriter writer) | ||
| throws IOException, ReflectiveOperationException | ||
| { | ||
| Field field = OrcOutputFormat.class.getClassLoader() | ||
| .loadClass(OrcOutputFormat.class.getName() + "$OrcRecordWriter") | ||
| .getDeclaredField("writer"); | ||
| field.setAccessible(true); | ||
| ((Writer) field.get(writer)).writeIntermediateFooter(); | ||
| } | ||
| } |