Examples with HoodieLogFileReader org.apache.hudi.common.table.log.HoodieLogFileReader used on opensource projects

Example 1 with HoodieLogFileReader

use of org.apache.hudi.common.table.log.HoodieLogFileReader in project hudi by apache.

the class TestHoodieLogFormat method testBasicAppendAndReadInReverse.

@ParameterizedTest
@ValueSource(booleans = { true, false })
public void testBasicAppendAndReadInReverse(boolean readBlocksLazily) throws IOException, URISyntaxException, InterruptedException {
    Writer writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    Schema schema = getSimpleSchema();
    List<IndexedRecord> records1 = SchemaTestUtil.generateTestRecords(0, 100);
    List<IndexedRecord> copyOfRecords1 = records1.stream().map(record -> HoodieAvroUtils.rewriteRecord((GenericRecord) record, schema)).collect(Collectors.toList());
    Map<HoodieLogBlock.HeaderMetadataType, String> header = new HashMap<>();
    header.put(HoodieLogBlock.HeaderMetadataType.INSTANT_TIME, "100");
    header.put(HoodieLogBlock.HeaderMetadataType.SCHEMA, schema.toString());
    HoodieDataBlock dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records1, header);
    writer.appendBlock(dataBlock);
    writer.close();
    writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    List<IndexedRecord> records2 = SchemaTestUtil.generateTestRecords(0, 100);
    List<IndexedRecord> copyOfRecords2 = records2.stream().map(record -> HoodieAvroUtils.rewriteRecord((GenericRecord) record, schema)).collect(Collectors.toList());
    dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records2, header);
    writer.appendBlock(dataBlock);
    writer.close();
    // Close and Open again and append 100 more records
    writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    List<IndexedRecord> records3 = SchemaTestUtil.generateTestRecords(0, 100);
    List<IndexedRecord> copyOfRecords3 = records3.stream().map(record -> HoodieAvroUtils.rewriteRecord((GenericRecord) record, schema)).collect(Collectors.toList());
    dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records3, header);
    writer.appendBlock(dataBlock);
    writer.close();
    FileCreateUtils.createDeltaCommit(basePath, "100", fs);
    HoodieLogFileReader reader = new HoodieLogFileReader(fs, new HoodieLogFile(writer.getLogFile().getPath(), fs.getFileStatus(writer.getLogFile().getPath()).getLen()), SchemaTestUtil.getSimpleSchema(), bufferSize, readBlocksLazily, true);
    assertTrue(reader.hasPrev(), "Last block should be available");
    HoodieLogBlock prevBlock = reader.prev();
    HoodieDataBlock dataBlockRead = (HoodieDataBlock) prevBlock;
    List<IndexedRecord> recordsRead1 = getRecords(dataBlockRead);
    assertEquals(copyOfRecords3.size(), recordsRead1.size(), "Third records size should be equal to the written records size");
    assertEquals(copyOfRecords3, recordsRead1, "Both records lists should be the same. (ordering guaranteed)");
    assertTrue(reader.hasPrev(), "Second block should be available");
    prevBlock = reader.prev();
    dataBlockRead = (HoodieDataBlock) prevBlock;
    List<IndexedRecord> recordsRead2 = getRecords(dataBlockRead);
    assertEquals(copyOfRecords2.size(), recordsRead2.size(), "Read records size should be equal to the written records size");
    assertEquals(copyOfRecords2, recordsRead2, "Both records lists should be the same. (ordering guaranteed)");
    assertTrue(reader.hasPrev(), "First block should be available");
    prevBlock = reader.prev();
    dataBlockRead = (HoodieDataBlock) prevBlock;
    List<IndexedRecord> recordsRead3 = getRecords(dataBlockRead);
    assertEquals(copyOfRecords1.size(), recordsRead3.size(), "Read records size should be equal to the written records size");
    assertEquals(copyOfRecords1, recordsRead3, "Both records lists should be the same. (ordering guaranteed)");
    assertFalse(reader.hasPrev());
    reader.close();
}

Example 2 with HoodieLogFileReader

use of org.apache.hudi.common.table.log.HoodieLogFileReader in project hudi by apache.

the class TestHoodieLogFormat method testAppendAndReadOnCorruptedLogInReverse.

@ParameterizedTest
@ValueSource(booleans = { true, false })
public void testAppendAndReadOnCorruptedLogInReverse(boolean readBlocksLazily) throws IOException, URISyntaxException, InterruptedException {
    Writer writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    Schema schema = getSimpleSchema();
    List<IndexedRecord> records = SchemaTestUtil.generateTestRecords(0, 100);
    Map<HoodieLogBlock.HeaderMetadataType, String> header = new HashMap<>();
    header.put(HoodieLogBlock.HeaderMetadataType.INSTANT_TIME, "100");
    header.put(HoodieLogBlock.HeaderMetadataType.SCHEMA, schema.toString());
    HoodieDataBlock dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records, header);
    writer.appendBlock(dataBlock);
    writer.close();
    FileCreateUtils.createDeltaCommit(basePath, "100", fs);
    // Append some arbit byte[] to thee end of the log (mimics a partially written commit)
    fs = FSUtils.getFs(fs.getUri().toString(), fs.getConf());
    FSDataOutputStream outputStream = fs.append(writer.getLogFile().getPath());
    // create a block with
    outputStream.write(HoodieLogFormat.MAGIC);
    outputStream.writeInt(HoodieLogBlockType.AVRO_DATA_BLOCK.ordinal());
    // Write out a length that does not confirm with the content
    outputStream.writeInt(1000);
    // Write out footer length
    outputStream.writeInt(1);
    // Write out some metadata
    // TODO : test for failure to write metadata - NA ?
    outputStream.write(HoodieLogBlock.getLogMetadataBytes(header));
    outputStream.write("something-random".getBytes());
    outputStream.flush();
    outputStream.close();
    // Should be able to append a new block
    writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    records = SchemaTestUtil.generateTestRecords(0, 100);
    dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records, header);
    writer.appendBlock(dataBlock);
    writer.close();
    // First round of reads - we should be able to read the first block and then EOF
    HoodieLogFileReader reader = new HoodieLogFileReader(fs, new HoodieLogFile(writer.getLogFile().getPath(), fs.getFileStatus(writer.getLogFile().getPath()).getLen()), schema, bufferSize, readBlocksLazily, true);
    assertTrue(reader.hasPrev(), "Last block should be available");
    HoodieLogBlock block = reader.prev();
    assertTrue(block instanceof HoodieDataBlock, "Last block should be datablock");
    assertTrue(reader.hasPrev(), "Last block should be available");
    assertThrows(CorruptedLogFileException.class, () -> {
        reader.prev();
    });
    reader.close();
}

Example 3 with HoodieLogFileReader

use of org.apache.hudi.common.table.log.HoodieLogFileReader in project hudi by apache.

the class TestHoodieLogFormat method testBasicAppendAndTraverseInReverse.

@ParameterizedTest
@ValueSource(booleans = { true, false })
public void testBasicAppendAndTraverseInReverse(boolean readBlocksLazily) throws IOException, URISyntaxException, InterruptedException {
    Writer writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    Schema schema = getSimpleSchema();
    List<IndexedRecord> records1 = SchemaTestUtil.generateTestRecords(0, 100);
    List<IndexedRecord> copyOfRecords1 = records1.stream().map(record -> HoodieAvroUtils.rewriteRecord((GenericRecord) record, schema)).collect(Collectors.toList());
    Map<HoodieLogBlock.HeaderMetadataType, String> header = new HashMap<>();
    header.put(HoodieLogBlock.HeaderMetadataType.INSTANT_TIME, "100");
    header.put(HoodieLogBlock.HeaderMetadataType.SCHEMA, schema.toString());
    HoodieDataBlock dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records1, header);
    writer.appendBlock(dataBlock);
    writer.close();
    writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    List<IndexedRecord> records2 = SchemaTestUtil.generateTestRecords(0, 100);
    dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records2, header);
    writer.appendBlock(dataBlock);
    writer.close();
    // Close and Open again and append 100 more records
    writer = HoodieLogFormat.newWriterBuilder().onParentPath(partitionPath).withFileExtension(HoodieLogFile.DELTA_EXTENSION).withFileId("test-fileid1").overBaseCommit("100").withFs(fs).build();
    List<IndexedRecord> records3 = SchemaTestUtil.generateTestRecords(0, 100);
    dataBlock = getDataBlock(DEFAULT_DATA_BLOCK_TYPE, records3, header);
    writer.appendBlock(dataBlock);
    writer.close();
    FileCreateUtils.createDeltaCommit(basePath, "100", fs);
    HoodieLogFileReader reader = new HoodieLogFileReader(fs, new HoodieLogFile(writer.getLogFile().getPath(), fs.getFileStatus(writer.getLogFile().getPath()).getLen()), SchemaTestUtil.getSimpleSchema(), bufferSize, readBlocksLazily, true);
    assertTrue(reader.hasPrev(), "Third block should be available");
    reader.moveToPrev();
    assertTrue(reader.hasPrev(), "Second block should be available");
    reader.moveToPrev();
    // After moving twice, this last reader.prev() should read the First block written
    assertTrue(reader.hasPrev(), "First block should be available");
    HoodieLogBlock prevBlock = reader.prev();
    HoodieDataBlock dataBlockRead = (HoodieDataBlock) prevBlock;
    List<IndexedRecord> recordsRead = getRecords(dataBlockRead);
    assertEquals(copyOfRecords1.size(), recordsRead.size(), "Read records size should be equal to the written records size");
    assertEquals(copyOfRecords1, recordsRead, "Both records lists should be the same. (ordering guaranteed)");
    assertFalse(reader.hasPrev());
    reader.close();
}