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Example 1 with FileSystemBackedTableMetadata

use of org.apache.hudi.metadata.FileSystemBackedTableMetadata in project hudi by apache.

the class HoodieClientTestHarness method validateMetadata.

/**
 * Validate the metadata tables contents to ensure it matches what is on the file system.
 */
public void validateMetadata(HoodieTestTable testTable, List<String> inflightCommits, HoodieWriteConfig writeConfig, String metadataTableBasePath, boolean doFullValidation) throws IOException {
    HoodieTableMetadata tableMetadata = metadata(writeConfig, context);
    assertNotNull(tableMetadata, "MetadataReader should have been initialized");
    if (!writeConfig.isMetadataTableEnabled()) {
        return;
    }
    if (!tableMetadata.getSyncedInstantTime().isPresent() || tableMetadata instanceof FileSystemBackedTableMetadata) {
        throw new IllegalStateException("Metadata should have synced some commits or tableMetadata should not be an instance " + "of FileSystemBackedTableMetadata");
    }
    assertEquals(inflightCommits, testTable.inflightCommits());
    HoodieTimer timer = new HoodieTimer().startTimer();
    HoodieSparkEngineContext engineContext = new HoodieSparkEngineContext(jsc);
    // Partitions should match
    List<java.nio.file.Path> fsPartitionPaths = testTable.getAllPartitionPaths();
    List<String> fsPartitions = new ArrayList<>();
    fsPartitionPaths.forEach(entry -> fsPartitions.add(entry.getFileName().toString()));
    if (fsPartitions.isEmpty()) {
        fsPartitions.add("");
    }
    List<String> metadataPartitions = tableMetadata.getAllPartitionPaths();
    Collections.sort(fsPartitions);
    Collections.sort(metadataPartitions);
    assertEquals(fsPartitions.size(), metadataPartitions.size(), "Partitions should match");
    assertEquals(fsPartitions, metadataPartitions, "Partitions should match");
    // Files within each partition should match
    metaClient = HoodieTableMetaClient.reload(metaClient);
    HoodieTable table = HoodieSparkTable.create(writeConfig, engineContext, true);
    TableFileSystemView tableView = table.getHoodieView();
    List<String> fullPartitionPaths = fsPartitions.stream().map(partition -> basePath + "/" + partition).collect(Collectors.toList());
    Map<String, FileStatus[]> partitionToFilesMap = tableMetadata.getAllFilesInPartitions(fullPartitionPaths);
    assertEquals(fsPartitions.size(), partitionToFilesMap.size());
    fsPartitions.forEach(partition -> {
        try {
            validateFilesPerPartition(testTable, tableMetadata, tableView, partitionToFilesMap, partition);
        } catch (IOException e) {
            fail("Exception should not be raised: " + e);
        }
    });
    if (doFullValidation) {
        runFullValidation(writeConfig, metadataTableBasePath, engineContext);
    }
    LOG.info("Validation time=" + timer.endTimer());
}
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Example 2 with FileSystemBackedTableMetadata

use of org.apache.hudi.metadata.FileSystemBackedTableMetadata in project hudi by apache.

the class HoodieDataTableValidator method doDataTableValidation.

public void doDataTableValidation() {
    boolean finalResult = true;
    metaClient.reloadActiveTimeline();
    String basePath = metaClient.getBasePath();
    HoodieSparkEngineContext engineContext = new HoodieSparkEngineContext(jsc);
    try {
        HoodieTableMetadata tableMetadata = new FileSystemBackedTableMetadata(engineContext, engineContext.getHadoopConf(), cfg.basePath, cfg.assumeDatePartitioning);
        List<Path> allDataFilePaths = HoodieDataTableUtils.getBaseAndLogFilePathsFromFileSystem(tableMetadata, cfg.basePath);
        // verify that no data files present with commit time < earliest commit in active timeline.
        if (metaClient.getActiveTimeline().firstInstant().isPresent()) {
            String earliestInstant = metaClient.getActiveTimeline().firstInstant().get().getTimestamp();
            List<Path> danglingFilePaths = allDataFilePaths.stream().filter(path -> {
                String instantTime = FSUtils.getCommitTime(path.getName());
                return HoodieTimeline.compareTimestamps(instantTime, HoodieTimeline.LESSER_THAN, earliestInstant);
            }).collect(Collectors.toList());
            if (!danglingFilePaths.isEmpty() && danglingFilePaths.size() > 0) {
                LOG.error("Data table validation failed due to dangling files count " + danglingFilePaths.size() + ", found before active timeline");
                danglingFilePaths.forEach(entry -> LOG.error("Dangling file: " + entry.toString()));
                finalResult = false;
                if (!cfg.ignoreFailed) {
                    throw new HoodieValidationException("Data table validation failed due to dangling files " + danglingFilePaths.size());
                }
            }
            // Verify that for every completed commit in active timeline, there are no extra files found apart from what is present in
            // commit metadata.
            Map<String, List<String>> instantToFilesMap = RepairUtils.tagInstantsOfBaseAndLogFiles(metaClient.getBasePath(), allDataFilePaths);
            HoodieActiveTimeline activeTimeline = metaClient.getActiveTimeline();
            List<HoodieInstant> hoodieInstants = activeTimeline.filterCompletedInstants().getInstants().collect(Collectors.toList());
            List<String> danglingFiles = engineContext.flatMap(hoodieInstants, instant -> {
                Option<Set<String>> filesFromTimeline = RepairUtils.getBaseAndLogFilePathsFromTimeline(activeTimeline, instant);
                List<String> baseAndLogFilesFromFs = instantToFilesMap.containsKey(instant.getTimestamp()) ? instantToFilesMap.get(instant.getTimestamp()) : Collections.emptyList();
                if (!baseAndLogFilesFromFs.isEmpty()) {
                    Set<String> danglingInstantFiles = new HashSet<>(baseAndLogFilesFromFs);
                    if (filesFromTimeline.isPresent()) {
                        danglingInstantFiles.removeAll(filesFromTimeline.get());
                    }
                    return new ArrayList<>(danglingInstantFiles).stream();
                } else {
                    return Stream.empty();
                }
            }, hoodieInstants.size()).stream().collect(Collectors.toList());
            if (!danglingFiles.isEmpty()) {
                LOG.error("Data table validation failed due to extra files found for completed commits " + danglingFiles.size());
                danglingFiles.forEach(entry -> LOG.error("Dangling file: " + entry.toString()));
                finalResult = false;
                if (!cfg.ignoreFailed) {
                    throw new HoodieValidationException("Data table validation failed due to dangling files " + danglingFiles.size());
                }
            }
        }
    } catch (Exception e) {
        LOG.error("Data table validation failed due to " + e.getMessage(), e);
        if (!cfg.ignoreFailed) {
            throw new HoodieValidationException("Data table validation failed due to " + e.getMessage(), e);
        }
    }
    if (finalResult) {
        LOG.info("Data table validation succeeded.");
    } else {
        LOG.warn("Data table validation failed.");
    }
}
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Example 3 with FileSystemBackedTableMetadata

use of org.apache.hudi.metadata.FileSystemBackedTableMetadata in project hudi by apache.

the class TestHoodieBackedMetadata method validateMetadata.

private void validateMetadata(SparkRDDWriteClient testClient) throws IOException {
    HoodieWriteConfig config = testClient.getConfig();
    SparkRDDWriteClient client;
    if (config.isEmbeddedTimelineServerEnabled()) {
        testClient.close();
        client = new SparkRDDWriteClient(testClient.getEngineContext(), testClient.getConfig());
    } else {
        client = testClient;
    }
    HoodieTableMetadata tableMetadata = metadata(client);
    assertNotNull(tableMetadata, "MetadataReader should have been initialized");
    if (!config.isMetadataTableEnabled()) {
        return;
    }
    HoodieTimer timer = new HoodieTimer().startTimer();
    HoodieSparkEngineContext engineContext = new HoodieSparkEngineContext(jsc);
    // Partitions should match
    FileSystemBackedTableMetadata fsBackedTableMetadata = new FileSystemBackedTableMetadata(engineContext, new SerializableConfiguration(hadoopConf), config.getBasePath(), config.shouldAssumeDatePartitioning());
    List<String> fsPartitions = fsBackedTableMetadata.getAllPartitionPaths();
    List<String> metadataPartitions = tableMetadata.getAllPartitionPaths();
    Collections.sort(fsPartitions);
    Collections.sort(metadataPartitions);
    assertEquals(fsPartitions.size(), metadataPartitions.size(), "Partitions should match");
    assertTrue(fsPartitions.equals(metadataPartitions), "Partitions should match");
    // Files within each partition should match
    metaClient = HoodieTableMetaClient.reload(metaClient);
    HoodieTable table = HoodieSparkTable.create(config, engineContext);
    TableFileSystemView tableView = table.getHoodieView();
    List<String> fullPartitionPaths = fsPartitions.stream().map(partition -> basePath + "/" + partition).collect(Collectors.toList());
    Map<String, FileStatus[]> partitionToFilesMap = tableMetadata.getAllFilesInPartitions(fullPartitionPaths);
    assertEquals(fsPartitions.size(), partitionToFilesMap.size());
    fsPartitions.forEach(partition -> {
        try {
            Path partitionPath;
            if (partition.equals("")) {
                // Should be the non-partitioned case
                partitionPath = new Path(basePath);
            } else {
                partitionPath = new Path(basePath, partition);
            }
            FileStatus[] fsStatuses = FSUtils.getAllDataFilesInPartition(fs, partitionPath);
            FileStatus[] metaStatuses = tableMetadata.getAllFilesInPartition(partitionPath);
            List<String> fsFileNames = Arrays.stream(fsStatuses).map(s -> s.getPath().getName()).collect(Collectors.toList());
            List<String> metadataFilenames = Arrays.stream(metaStatuses).map(s -> s.getPath().getName()).collect(Collectors.toList());
            Collections.sort(fsFileNames);
            Collections.sort(metadataFilenames);
            assertEquals(fsStatuses.length, partitionToFilesMap.get(partitionPath.toString()).length);
            // File sizes should be valid
            Arrays.stream(metaStatuses).forEach(s -> assertTrue(s.getLen() > 0));
            if ((fsFileNames.size() != metadataFilenames.size()) || (!fsFileNames.equals(metadataFilenames))) {
                LOG.info("*** File system listing = " + Arrays.toString(fsFileNames.toArray()));
                LOG.info("*** Metadata listing = " + Arrays.toString(metadataFilenames.toArray()));
                for (String fileName : fsFileNames) {
                    if (!metadataFilenames.contains(fileName)) {
                        LOG.error(partition + "FsFilename " + fileName + " not found in Meta data");
                    }
                }
                for (String fileName : metadataFilenames) {
                    if (!fsFileNames.contains(fileName)) {
                        LOG.error(partition + "Metadata file " + fileName + " not found in original FS");
                    }
                }
            }
            // Block sizes should be valid
            Arrays.stream(metaStatuses).forEach(s -> assertTrue(s.getBlockSize() > 0));
            List<Long> fsBlockSizes = Arrays.stream(fsStatuses).map(FileStatus::getBlockSize).collect(Collectors.toList());
            Collections.sort(fsBlockSizes);
            List<Long> metadataBlockSizes = Arrays.stream(metaStatuses).map(FileStatus::getBlockSize).collect(Collectors.toList());
            Collections.sort(metadataBlockSizes);
            assertEquals(fsBlockSizes, metadataBlockSizes);
            assertEquals(fsFileNames.size(), metadataFilenames.size(), "Files within partition " + partition + " should match");
            assertTrue(fsFileNames.equals(metadataFilenames), "Files within partition " + partition + " should match");
            // FileSystemView should expose the same data
            List<HoodieFileGroup> fileGroups = tableView.getAllFileGroups(partition).collect(Collectors.toList());
            fileGroups.addAll(tableView.getAllReplacedFileGroups(partition).collect(Collectors.toList()));
            fileGroups.forEach(g -> LogManager.getLogger(TestHoodieBackedMetadata.class).info(g));
            fileGroups.forEach(g -> g.getAllBaseFiles().forEach(b -> LogManager.getLogger(TestHoodieBackedMetadata.class).info(b)));
            fileGroups.forEach(g -> g.getAllFileSlices().forEach(s -> LogManager.getLogger(TestHoodieBackedMetadata.class).info(s)));
            long numFiles = fileGroups.stream().mapToLong(g -> g.getAllBaseFiles().count() + g.getAllFileSlices().mapToLong(s -> s.getLogFiles().count()).sum()).sum();
            assertEquals(metadataFilenames.size(), numFiles);
        } catch (IOException e) {
            e.printStackTrace();
            assertTrue(false, "Exception should not be raised: " + e);
        }
    });
    HoodieBackedTableMetadataWriter metadataWriter = metadataWriter(client);
    assertNotNull(metadataWriter, "MetadataWriter should have been initialized");
    // Validate write config for metadata table
    HoodieWriteConfig metadataWriteConfig = metadataWriter.getWriteConfig();
    assertFalse(metadataWriteConfig.isMetadataTableEnabled(), "No metadata table for metadata table");
    // Metadata table should be in sync with the dataset
    HoodieTableMetaClient metadataMetaClient = HoodieTableMetaClient.builder().setConf(hadoopConf).setBasePath(metadataTableBasePath).build();
    // Metadata table is MOR
    assertEquals(metadataMetaClient.getTableType(), HoodieTableType.MERGE_ON_READ, "Metadata Table should be MOR");
    // Metadata table is HFile format
    assertEquals(metadataMetaClient.getTableConfig().getBaseFileFormat(), HoodieFileFormat.HFILE, "Metadata Table base file format should be HFile");
    // Metadata table has a fixed number of partitions
    // Cannot use FSUtils.getAllFoldersWithPartitionMetaFile for this as that function filters all directory
    // in the .hoodie folder.
    List<String> metadataTablePartitions = FSUtils.getAllPartitionPaths(engineContext, HoodieTableMetadata.getMetadataTableBasePath(basePath), false, false);
    assertEquals(metadataWriter.getEnabledPartitionTypes().size(), metadataTablePartitions.size());
    final Map<String, MetadataPartitionType> metadataEnabledPartitionTypes = new HashMap<>();
    metadataWriter.getEnabledPartitionTypes().forEach(e -> metadataEnabledPartitionTypes.put(e.getPartitionPath(), e));
    // Metadata table should automatically compact and clean
    // versions are +1 as autoclean / compaction happens end of commits
    int numFileVersions = metadataWriteConfig.getCleanerFileVersionsRetained() + 1;
    HoodieTableFileSystemView fsView = new HoodieTableFileSystemView(metadataMetaClient, metadataMetaClient.getActiveTimeline());
    metadataTablePartitions.forEach(partition -> {
        List<FileSlice> latestSlices = fsView.getLatestFileSlices(partition).collect(Collectors.toList());
        assertTrue(latestSlices.stream().map(FileSlice::getBaseFile).count() <= metadataEnabledPartitionTypes.get(partition).getFileGroupCount(), "Should have a single latest base file per file group");
        assertTrue(latestSlices.size() <= metadataEnabledPartitionTypes.get(partition).getFileGroupCount(), "Should have a single latest file slice per file group");
        assertTrue(latestSlices.size() <= (numFileVersions * metadataEnabledPartitionTypes.get(partition).getFileGroupCount()), "Should limit file slice to " + numFileVersions + " per file group, but was " + latestSlices.size());
    });
    LOG.info("Validation time=" + timer.endTimer());
}
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