Examples with ROOT_INPUT_PATH_PROP org.apache.hudi.utilities.sources.helpers.DFSPathSelector.Config.ROOT_INPUT_PATH_PROP used on opensource projects

Example 1 with ROOT_INPUT_PATH_PROP

use of org.apache.hudi.utilities.sources.helpers.DFSPathSelector.Config.ROOT_INPUT_PATH_PROP in project hudi by apache.

the class DatePartitionPathSelector method getNextFilePathsAndMaxModificationTime.

@Override
public Pair<Option<String>, String> getNextFilePathsAndMaxModificationTime(JavaSparkContext sparkContext, Option<String> lastCheckpointStr, long sourceLimit) {
    // If not specified the current date is assumed by default.
    LocalDate currentDate = LocalDate.parse(props.getString(Config.CURRENT_DATE, LocalDate.now().toString()));
    // obtain all eligible files under root folder.
    LOG.info("Root path => " + props.getString(ROOT_INPUT_PATH_PROP) + " source limit => " + sourceLimit + " depth of day partition => " + datePartitionDepth + " num prev days to list => " + numPrevDaysToList + " from current date => " + currentDate);
    long lastCheckpointTime = lastCheckpointStr.map(Long::parseLong).orElse(Long.MIN_VALUE);
    HoodieSparkEngineContext context = new HoodieSparkEngineContext(sparkContext);
    SerializableConfiguration serializedConf = new SerializableConfiguration(fs.getConf());
    List<String> prunedPartitionPaths = pruneDatePartitionPaths(context, fs, props.getString(ROOT_INPUT_PATH_PROP), currentDate);
    List<FileStatus> eligibleFiles = context.flatMap(prunedPartitionPaths, path -> {
        FileSystem fs = new Path(path).getFileSystem(serializedConf.get());
        return listEligibleFiles(fs, new Path(path), lastCheckpointTime).stream();
    }, partitionsListParallelism);
    // sort them by modification time ascending.
    List<FileStatus> sortedEligibleFiles = eligibleFiles.stream().sorted(Comparator.comparingLong(FileStatus::getModificationTime)).collect(Collectors.toList());
    // Filter based on checkpoint & input size, if needed
    long currentBytes = 0;
    long newCheckpointTime = lastCheckpointTime;
    List<FileStatus> filteredFiles = new ArrayList<>();
    for (FileStatus f : sortedEligibleFiles) {
        if (currentBytes + f.getLen() >= sourceLimit && f.getModificationTime() > newCheckpointTime) {
            // so that some files with the same modification time won't be skipped in next read
            break;
        }
        newCheckpointTime = f.getModificationTime();
        currentBytes += f.getLen();
        filteredFiles.add(f);
    }
    // no data to read
    if (filteredFiles.isEmpty()) {
        return new ImmutablePair<>(Option.empty(), String.valueOf(newCheckpointTime));
    }
    // read the files out.
    String pathStr = filteredFiles.stream().map(f -> f.getPath().toString()).collect(Collectors.joining(","));
    return new ImmutablePair<>(Option.ofNullable(pathStr), String.valueOf(newCheckpointTime));
}