codope commented on code in PR #6234:
URL: https://github.com/apache/hudi/pull/6234#discussion_r932083873
##########
hudi-common/src/main/java/org/apache/hudi/metadata/FileSystemBackedTableMetadata.java:
##########
@@ -24,16 +24,17 @@
import org.apache.hudi.common.data.HoodieData;
import org.apache.hudi.common.engine.HoodieEngineContext;
import org.apache.hudi.common.fs.FSUtils;
+import org.apache.hudi.common.function.SerializableFunction;
Review Comment:
unused import?
##########
hudi-common/src/main/java/org/apache/hudi/metadata/FileSystemBackedTableMetadata.java:
##########
@@ -83,31 +85,35 @@ public List<String> getAllPartitionPaths() throws
IOException {
int listingParallelism = Math.min(DEFAULT_LISTING_PARALLELISM,
pathsToList.size());
// List all directories in parallel
- List<Pair<Path, FileStatus[]>> dirToFileListing =
engineContext.map(pathsToList, path -> {
+ List<FileStatus> dirToFileListing = engineContext.flatMap(pathsToList,
path -> {
FileSystem fileSystem = path.getFileSystem(hadoopConf.get());
- return Pair.of(path, fileSystem.listStatus(path));
+ return Arrays.stream(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.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()));
+ // if current dictionary does not contain PartitionMetadata, add it to
queue to be processed.
+ int fileListingParallelism = Math.min(DEFAULT_LISTING_PARALLELISM,
dirToFileListing.size());
+ List<Pair<Option<String>, Option<Path>>> result =
engineContext.map(dirToFileListing, fileStatus -> {
Review Comment:
let's add a comment for the reader what `List<Pair<Option<String>,
Option<Path>>>` holds.
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