szehon-ho commented on code in PR #5495:
URL: https://github.com/apache/iceberg/pull/5495#discussion_r948476604
##########
spark/v3.3/spark/src/main/java/org/apache/iceberg/spark/actions/DeleteOrphanFilesSparkAction.java:
##########
@@ -426,65 +405,159 @@ private static Map<String, String>
flattenMap(Map<String, String> map) {
if (map != null) {
for (String key : map.keySet()) {
String value = map.get(key);
- for (String splitKey : COMMA.split(key)) {
+ for (String splitKey : COMMA_SPLITTER.split(key)) {
flattenedMap.put(splitKey.trim(), value.trim());
}
}
}
return flattenedMap;
}
- private static MapPartitionsFunction<Tuple2<FileMetadata, FileMetadata>,
String> findOrphanFiles(
- PrefixMismatchMode mode, SetAccumulator<Pair<String, String>> conflicts)
{
- return rows -> {
- Iterator<String> transformed =
- Iterators.transform(
- rows,
- row -> {
- FileMetadata actual = row._1;
- FileMetadata valid = row._2;
-
- if (valid == null) {
- return actual.location;
- }
-
- boolean schemeMatch =
- Strings.isNullOrEmpty(valid.scheme)
- || valid.scheme.equalsIgnoreCase(actual.scheme);
- boolean authorityMatch =
- Strings.isNullOrEmpty(valid.authority)
- || valid.authority.equalsIgnoreCase(actual.authority);
-
- if ((!schemeMatch || !authorityMatch) && mode ==
PrefixMismatchMode.DELETE) {
- return actual.location;
- } else {
- if (!schemeMatch) {
- conflicts.add(Pair.of(valid.scheme, actual.scheme));
- }
- if (!authorityMatch) {
- conflicts.add(Pair.of(valid.authority, actual.authority));
- }
- }
-
- return null;
- });
- return Iterators.filter(transformed, Objects::nonNull);
- };
+ private static class ListDirsRecursively implements
FlatMapFunction<Iterator<String>, String> {
+
+ private final Broadcast<SerializableConfiguration> hadoopConf;
+ private final long olderThanTimestamp;
+ private final PathFilter pathFilter;
+
+ ListDirsRecursively(
+ Broadcast<SerializableConfiguration> hadoopConf,
+ long olderThanTimestamp,
+ PathFilter pathFilter) {
+
+ this.hadoopConf = hadoopConf;
+ this.olderThanTimestamp = olderThanTimestamp;
+ this.pathFilter = pathFilter;
+ }
+
+ @Override
+ public Iterator<String> call(Iterator<String> dirs) throws Exception {
+ List<String> subDirs = Lists.newArrayList();
+ List<String> files = Lists.newArrayList();
+
+ Predicate<FileStatus> predicate = file -> file.getModificationTime() <
olderThanTimestamp;
+
+ dirs.forEachRemaining(
+ dir -> {
+ listDirRecursively(
+ dir,
+ predicate,
+ hadoopConf.value().value(),
+ MAX_EXECUTOR_LISTING_DEPTH,
+ MAX_EXECUTOR_LISTING_DIRECT_SUB_DIRS,
+ subDirs,
+ pathFilter,
+ files);
+ });
+
+ if (!subDirs.isEmpty()) {
+ throw new RuntimeException(
+ "Could not list sub directories, reached maximum depth: " +
MAX_EXECUTOR_LISTING_DEPTH);
+ }
+
+ return files.iterator();
+ }
}
- private static MapPartitionsFunction<Row, FileMetadata> toFileMetadata(
- Map<String, String> equalSchemesMap, Map<String, String>
equalAuthoritiesMap) {
- return rows ->
- Iterators.transform(
- rows,
- row -> {
- String location = row.getString(0);
- URI uri = new Path(location).toUri();
- String scheme = equalSchemesMap.getOrDefault(uri.getScheme(),
uri.getScheme());
- String authority =
- equalAuthoritiesMap.getOrDefault(uri.getAuthority(),
uri.getAuthority());
- return new FileMetadata(scheme, authority, uri.getPath(),
location);
- });
+ private static class FindOrphanFiles
+ implements MapPartitionsFunction<Tuple2<FileURI, FileURI>, String> {
+
+ private final PrefixMismatchMode mode;
+ private final SetAccumulator<Pair<String, String>> conflicts;
+
+ FindOrphanFiles(PrefixMismatchMode mode, SetAccumulator<Pair<String,
String>> conflicts) {
+ this.mode = mode;
+ this.conflicts = conflicts;
+ }
+
+ @Override
+ public Iterator<String> call(Iterator<Tuple2<FileURI, FileURI>> rows)
throws Exception {
+ Iterator<String> orphanFiles = Iterators.transform(rows,
this::toOrphanFile);
+ return Iterators.filter(orphanFiles, Objects::nonNull);
+ }
+
+ private String toOrphanFile(Tuple2<FileURI, FileURI> row) {
+ FileURI actual = row._1;
+ FileURI valid = row._2;
+
+ if (valid == null) {
+ return actual.valueAsString;
+ }
+
+ boolean schemeMatch = uriComponentMatch(valid.scheme, actual.scheme);
+ boolean authorityMatch = uriComponentMatch(valid.authority,
actual.authority);
+
+ if ((!schemeMatch || !authorityMatch) && mode ==
PrefixMismatchMode.DELETE) {
+ return actual.valueAsString;
+ } else {
+ if (!schemeMatch) {
+ conflicts.add(Pair.of(valid.scheme, actual.scheme));
+ }
+
+ if (!authorityMatch) {
+ conflicts.add(Pair.of(valid.authority, actual.authority));
+ }
+
+ return null;
+ }
+ }
+
+ private boolean uriComponentMatch(String valid, String actual) {
+ return Strings.isNullOrEmpty(valid) || valid.equalsIgnoreCase(actual);
+ }
+ }
+
+ @VisibleForTesting
+ static class StringToFileURI extends ToFileURI<String> {
+ StringToFileURI(Map<String, String> equalSchemes, Map<String, String>
equalAuthorities) {
+ super(equalSchemes, equalAuthorities);
+ }
+
+ @Override
+ protected String uriAsString(String value) {
+ return value;
+ }
+ }
+
+ @VisibleForTesting
+ static class FileInfoToFileURI extends ToFileURI<FileInfo> {
+ FileInfoToFileURI(Map<String, String> equalSchemes, Map<String, String>
equalAuthorities) {
+ super(equalSchemes, equalAuthorities);
+ }
+
+ @Override
+ protected String uriAsString(FileInfo fileInfo) {
+ return fileInfo.getPath();
+ }
+ }
+
+ private abstract static class ToFileURI<I> implements
MapPartitionsFunction<I, FileURI> {
Review Comment:
Wow thats weird, I think it interpreted ```<T>``` and ```<I>``` as html
tags, so comment came out weird.
I meant, we usually use ```<T>``` in Iceberg for type param, as not sure
```<I>``` has any more obvious meaning? its just a very small nit.
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