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[HUDI-4221] Fixing getAllPartitionPaths perf hit w/ FileSystemBackedMetadata (#5829)

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This commit is contained in:
Sivabalan Narayanan
2022-06-11 16:17:42 -04:00
committed by GitHub
parent 2b3a85528a
commit 08fe281091
1 changed files with 22 additions and 17 deletions
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39
hudi-common/src/main/java/org/apache/hudi/metadata/FileSystemBackedTableMetadata.java
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@@ -68,13 +68,14 @@ public class FileSystemBackedTableMetadata implements HoodieTableMetadata {
@Override
public List<String> getAllPartitionPaths() throws IOException {
FileSystem fs = new Path(datasetBasePath).getFileSystem(hadoopConf.get());
Path basePath = new Path(datasetBasePath);
FileSystem fs = basePath.getFileSystem(hadoopConf.get());
if (assumeDatePartitioning) {
return FSUtils.getAllPartitionFoldersThreeLevelsDown(fs, datasetBasePath);
}
List<Path> pathsToList = new CopyOnWriteArrayList<>();
pathsToList.add(new Path(datasetBasePath));
pathsToList.add(basePath);
List<String> partitionPaths = new CopyOnWriteArrayList<>();
while (!pathsToList.isEmpty()) {
@@ -82,27 +83,31 @@ public class FileSystemBackedTableMetadata implements HoodieTableMetadata {
int listingParallelism = Math.min(DEFAULT_LISTING_PARALLELISM, pathsToList.size());
// List all directories in parallel
List<FileStatus[]> dirToFileListing = engineContext.map(pathsToList, path -> {
List<Pair<Path, FileStatus[]>> dirToFileListing = engineContext.map(pathsToList, path -> {
FileSystem fileSystem = path.getFileSystem(hadoopConf.get());
return fileSystem.listStatus(path);
return Pair.of(path, fileSystem.listStatus(path));
}, listingParallelism);
pathsToList.clear();
// if current dictionary contains PartitionMetadata, add it to result
// if current dictionary does not contain PartitionMetadata, add it to queue
dirToFileListing.stream().flatMap(Arrays::stream).parallel()
.forEach(fileStatus -> {
if (fileStatus.isDirectory()) {
if (HoodiePartitionMetadata.hasPartitionMetadata(fs, fileStatus.getPath())) {
partitionPaths.add(FSUtils.getRelativePartitionPath(new Path(datasetBasePath), fileStatus.getPath()));
} else if (!fileStatus.getPath().getName().equals(HoodieTableMetaClient.METAFOLDER_NAME)) {
pathsToList.add(fileStatus.getPath());
}
} else if (fileStatus.getPath().getName().startsWith(HoodiePartitionMetadata.HOODIE_PARTITION_METAFILE_PREFIX)) {
String partitionName = FSUtils.getRelativePartitionPath(new Path(datasetBasePath), fileStatus.getPath().getParent());
partitionPaths.add(partitionName);
}
});
dirToFileListing.forEach(p -> {
Option<FileStatus> partitionMetaFile = Option.fromJavaOptional(Arrays.stream(p.getRight()).parallel()
.filter(fileStatus -> fileStatus.getPath().getName().startsWith(HoodiePartitionMetadata.HOODIE_PARTITION_METAFILE_PREFIX))
.findFirst());
if (partitionMetaFile.isPresent()) {
// Is a partition.
String partitionName = FSUtils.getRelativePartitionPath(basePath, p.getLeft());
partitionPaths.add(partitionName);
} else {
// Add sub-dirs to the queue
pathsToList.addAll(Arrays.stream(p.getRight())
.filter(fileStatus -> fileStatus.isDirectory() && !fileStatus.getPath().getName().equals(HoodieTableMetaClient.METAFOLDER_NAME))
.map(fileStatus -> fileStatus.getPath())
.collect(Collectors.toList()));
}
});
}
return partitionPaths;
}